It's the middle of the night, I've been watching too many VS videos, I'm going to ramble about my sona for a bit.
The thing about Samana is she's me, but in the story. She is aware of everything I am aware of and can make changes to it just as easily as I can.
It's a lot more physical when she does it, basically pulling things apart at the story threads, but there are no limits to what she can do. The only limits are what she imposes on herself.
"My other half can do whatever, whenever, existing on the other side of the fourth wall is like that. But I will at least ask for permission before reweaving someone sentient."
Unless you're pissed off.
You can't piss her off by threatening her. She's a shapeshifter and 99% incorporeal, literally nothing can hurt her. In fact she'll pretend to be angry just to mess with you, and get in a workout pretending to fight you.
You can annoy her by threatening her friends/characters, but she'll just help them beat you to a pulp. In a situation where they can't, she'll do it for them.
If you are threatening her home...
"My home is this side of the fourth wall's version of my other half's mental state. There is a very good reason why I don't want it destroyed."
And her morals go out the window. Again, she's me, this is essentially an Omori like situation. Nothing stops her from just removing the threat from reality.
She does know everything I do, remember, so if the threat isn't 100% serious, she'll play along.
"The most I get to do is clean up from this one's occasional mess. I need the exercise."
So... yeah. Super powerful reality warper versus anything that is a part of reality, it's a curb stomp.
