Alrighty, trying my hand at an adaptation of "My Goodbye" between Phillip and Samantha. As you suggested, it's starting with a bit of "Not Sorry for Loving You".
<The scene starts with a view of Samantha overlooking the ocean, but she hears Phil's footsteps. They're hard, with some stomp to them, and she knows he knows who she is. Perhaps the instrumental is in the form of a music box>
I take it now you know
And you saw how far Thomas would go
I promise I'm no foe
That my regret isn't just for show
I can't change the past although
I can assure you I had cared for him too
Yes I cared for Howard too
He was well-provided
And had a room of his own
And while misguided
I made him less alone
But if you decided
Then I am more than willing still to atone
But know that I did love him as my own
<The music box fades as the camera cuts to Samantha's shadowed face, but behind her the background slides to reveal Phil.
He's seething and furious.
I imagine the music will be emphasized by furious choir>
You loved him? Is that what we call it now?
Funny how all of it played
No, you locked him! Kept him broken and cowed
Forced into your masquerade
If you loved him, shouldn't you disavow
The blows from your other half?!
No, you chose it! Now you say you aren't proud?!
Don't make me laugh!
How can you not be disgusted?
How can you not be enraged?
How can you now be trusted
When you had never left the stage?!
How can you sit and do nothing?
How can you ignore his pain?
How can you claim you love him
When you were set on your own gain?!
You say such things, but didn't you let him go?
Didn't even bother to write
Was he nothing, that you never cared to know
How hard he battled and cried?
So where were you when he needed you most
To shelter him from the cold?
And who was I to not gather him close
In a mother's hold?
How can you act like you're blameless?
How can you antagonize?
How can a kid like you
Lecture me as if you're so wise?
How can you come up to face me?
How can you not see the same?
How can you not realize
You're set on your own gain?!
Don't make claims we're like each other!
Did I shackle him to strife?!
If you were to Howard a mother
Why stand by the "love of your life?!"
I had done my best to guide him
So we all could get along
Family with no need to hide him
Is such a desire wrong?
<Phillip, steadfast, lets his anger settle into consideration and determination>
You can try to call it family
You can, but don't you know
You can try to cling
But family knows how to let go
I can at least give him freedom
I can at least start again
I can at least prove I'm
No longer set for my own gain!
No longer set for my own gain
I can start again
No longer set for my own gain
I can start again!
There we have it! I hope I portrayed the conflict alright. I thought it would make sense to put Phillip in the spot of Athena, seeing as Athena initiates the confrontation and has the last word.
Bonus deleted lyric I couldn't fit in is "You who used to be a brother". I tried to have Samantha appeal her desire to be a mother to Phillip's desire to get Katie Lou back, something about wanting something so much you'll do anything for it, but I felt that took too much focus away from the insight on Sam trying to make things work.
Rhyming Anon this is literally so good and so peak and absolutely extraordinary I LOVE THIS SO MUCH :D I kid you not when I say that I have been replaying the original My Goodbye in the background while reading your lyrics and it's such a wonderful experience. The conflict was done extremely well, and I like that Phillip was placed in Athena's role in the song, very fitting for the reasons you said and also makes a lot of sense as Samantha wouldn't just start calling him out unless he did it first lol.
I also really like that bonus deleted lyric, I get why you removed it but maybe it can still be incorporated but as spoken word instead? Samantha could say this whether or not Phillip realizes who she is at that point in time when he speaks to her 🤔
I can see in the beginning of the song, when Phillip starts the second verse of his lyrics (the ones starting with 'how can you not') he continually takes steps towards Samantha while saying them, showing him beginning the confrontation but also showing his fury towards her, for being responsible for also keeping Howard on the island and for daring to try and claim she loves him like a mother does when her inaction says otherwise.
I can imagine Samantha standing up (or rather floating up?) when her lyrics start, and then turning around with a nasty glare in her eyes when she sings 'how can you act like you're blameless?' while taking steps in the air towards Phillip, glaring at him the entire time because how dare this kid thinks he can tell her what to do? Just because he's the 'best friend' of her 'child' he thinks he can lecture her? How absurd. Perhaps she's expecting Phillip to step back from her approach, but he remains firm in his stance and he only gets bolder when he gets to sing back, perhaps taking a few more steps closer to her to showcase this.
Also I can imagine when Samantha is singing her lyrics, Phillip has a few moments of feeling the weight of the guilt on his shoulders still. Because Samantha isn't wrong, he wasn't there for Howard when he needed him most. He didn't write back to him, didn't bother to keep tabs on how he was doing until now, when Howard has been so damaged physically and mentally that he's lost much of what made him him, and even when all is said and done, Howard will have to potentially live the rest of his life affected by what has happened to him and it's all his fault.
But that doesn't make his resolve crumble.
During the 'Was he nothing, that you never cared to know, how hard he battled and cried' line, I can see him looking down at the journal pages in his coat pocket, and remember everything he's read, all the pain and suffering his best friend has been through, and how he did nothing about it. But then he grabs a random page out and holds it while Samantha continues to sing, and the brief guilt that showed on his face gives way to a determined glare. When the 'So where were you when he needed you most, to shelter him from the cold?' line is said, he steels his resolve. He's here now, and he can do something about it (or has done something about it, if we assume this song takes place sometime after Phillip saves Howard and before the ancient city shenanigans), and no amount of guilt can stop him from doing (or has done) what he should've done long ago.
I'm gonna go on a bit of a ramble here on the original My Goodbye and this rendition of it so buckle up because this is long af: in EPIC, My Goodbye puts Athena and Odysseus against each other with their ideologies (Athena with ruthlessness, and Odysseus with mercy and open arms), and the thing is, neither of them are completely wrong. As shown multiple times throughout the musical, Odysseus showing mercy to the wrong people keep getting him in deeper situations until he embraces becoming a monster, and even that backfires on him at the end of the Thunder Saga where he's lost the remains of his crew and is forced to live with Calypso for seven years on her island. However, before then, being ruthless saved him (the sirens) and ruthlessnes is what allowed him to strong arm Poseidon into calling off the storm and letting him go home, and being ruthless is the only way to deal with the suitors as they have proven themselves so despicable that showing them open arms is completely out of the question.
By contrast, Athena learns that open arms isn't all that bad through Telemachus, who though hasn't yet learned about all the horrors of the world, is still able to empathize with Athena and it is through his kindness and willingness to accept her with open arms that encourages her to follow that example and this is what ultimately leads her to demanding her father into releasing Odysseus. Hell even before Telemachus, Athena regretted how she handled that argument with Odysseus long ago and how previous ideals of pure ruthlessness, while did save him and ultimately led him home, has caused him to lose himself and is no longer the person he once was, so much to the point where when Athena finally got to talk to Odysseus again and offered to build a future where empathy and open arms are less scorned and accepted, he's been through too much to even begin to try.
That is to say, neither Odysseus or Athena were completely wrong or right in their ideals, and they both ended up changing drastically from the other's ideal overtime.
And just like in the original My Goodbye, this rendition of it places two sides against each other, in this case Phillip and Samantha, in regards to their relation to Howard and how both of them have treated him in the past near year. Neither of them are completely wrong in their assessment of each other, with Phillip calling out Samantha for doing everything for Howard except the one thing that matters and that was setting him free and allowing him to go home, and instead she insists on acting like she's his mother and acting like they can be a happy family when that could never be the case even when discounting the messed up circumstances Howard was forced in. And Samantha also calls out Phillip for his neglect and how he didn't bother to write letters to Howard until it was nearly too late, and only now he decides to care? In Samantha's eyes, Phillip has essentially abandoned Howard, while she had done everything she could to provide for him and be there for him, even trying to get Thomas to accept him as a proper son so they can all be happy together without this silly need to hide Howard from the others. And well she's not completely wrong in her assessment but she's also missing the bigger picture, whether intentionally or not.
Unlike Samantha, Phillip has changed from the person he used to be. He has grown, has learned that he was wrong, and how the only thing he can do is try to make amends the best he could. And he did succeed in that, having rescued Howard and is now planning on destroying the only possible way for him to bring his sister back for the sake of the world. Samantha however, never seemed to recognize that what she was doing to Howard was wrong even if she was nicer to him. She was essentially infantilizing him by acting like he was her biological child when he's a grown man in his twenties, acting like the situation he was forced into was just a product of 'family issues', and most importantly, refusing to give him the one thing he wanted: freedom. This infantilization even extends somewhat to Phillip, as Samantha calls him a kid in the rendition when he's also a grown man and is reaching his thirties soon, just because he's younger than her and shorter than her.
A similar theme that both of them have is that they didn't want to let go of the family they have. Phillip with Katie, and Samantha with seeing Howard as her own child. However, eventually Phillip learns that a part of family that's inevitable is letting go of them, whether it'd be letting them go in death or just them moving on with their lives away from you when they have grown up. Samantha could never recognize this lesson, as her desire to be a mother was too strong for her to realize this, and her desire for a healty family dynamic where she gets to keep everyone in her life happy was also too strong, and this desire is what ultimately leads to tragedy. This isn't a situation where being neutral can solve anything and that being neutral is actually detrimental, and unfortunately Samantha fails to realize this.
Samantha's desire for a happy family isn't wrong, but the circumstances could never have allowed it to happen. Thomas hates Howard and nothing could have ever changed his mind about him, Howard fears and also hates Thomas, and his status as their prisoner has already doomed this dream of hers from the start. Samantha never recognized that she had to let one go for everyone to truly be happy, instead she tried to make things work when nothing could ever make her dream come true. By contrast, Phillip's journey through the island allowed him to wake up and realize that bringing Katie back from the dead is the wrong call, and that it's better to let her go and move on remembering her than trying to make things work for her to come back. His unhealthy desire was keeping him from doing what needed to be done, and keeping him from living life, and once he realizes this he's able to let go and move on.
Well that was a lot longer than I intended that to be so I'll close out by once again reiterating that Rhyming Anon you have created yet another peak piece it's literally so good :D