(o・・o)/
Dropping the stylized Nil letter format just for muses he hasn't properly met in TOA yet (emphasis on yet) so I can speak more objectively and succinctly without overstepping. Also because his opinion of Ivy is interesting to analyze :')
Out of all the alternate Elyos royals Rafal has a particular redemptive interest in Ivy. He specifically cites her to be the first lord he turned into Corrupted and after that action no doubt the rest of the dominoes fell into place.
In many ways I see her being his 'first sin' and the gateway leading into bigger ambitions during his heyday as Nil. That special distinction made her a prime target for his guilt when they reconvened as Rafal and present Elyos Ivy. I imagine that being a surviving case for him and TOA Ivy as well.
The guilt still exists in any scenario, but assuming their support chain has happened, Rafal's opinion of Ivy is more positive. Much friendlier. He sees her to be a pleasant and levelheaded acquaintance. Their rapport not only humanized his original Ivy but gives him another place to stand in for the present one, which is as a playfully dubbed 'schoolmate'. That fact is cutely ironic for their TOA verses because regarding their positions as fellow Black Eagle faculty members, schoolmates or peers is what they've formally become.
Rafal has also succeeded the pretend-instructor role from their support chain to become a proper one in Fódlan. Manifest destiny in a literal sense and all that.
In terms of alternate Ivy, Rafal's opinion of her when detached from his guilt was likely very structured and businesslike, lacking human warmth, and at times even somewhat exasperated. He seemed surprised that our Ivy didn't share her overemotional nature or her interruptions. That tells me Rafal wasn't perfectly in control of their interactions and that he fielded many of her personality quirks with some level of difficulty or annoyance. Possibly both. The bottom line is that he saw her as a regrettable tool.






