personally i want to think they eventually would put their differences aside, even if it takes a long time
the way i've interpreted caleb and evelyn as characters, is caleb is far more empathetic then evelyn is, he's prone to being understanding of others and it's how he comes to understand witches to begin with
despite how much he bottles up his own emotions, and is constantly putting on a facade because he's grown up having to do so, he really does try to see good in others where he can
so despite how angry he is at his brother and hurt, and how much he torments and blames himself for what happened with philip, he still wants to forgive philip, especially after coming to terms with the abusive situation they grew up under and how bad it was
because for him, his brother is someone in need of guidance, and he feels entirely responsible for how he turned out
evelyn on the other hand, while also being empathetic, is characterized by me as being much more stubborn and far less forgiving
as far as she's concerned, caleb shouldn't be putting so much on himself and he's wasting his life trying to fix his brother, especially after what philip tried to do
she gets it, she really does, she doesn't want to dismiss how much caleb loves his brother, so she doesn't try and fight it, she just heavily disagrees that philip is worth their time and that caleb should be trying to help him
for her, philip betrayed him, no matter the circumstances, and caleb should care about the family they've built together and focus solely on that
neither of these stances are entirely invalid, evelyn and caleb both entirely get where the other is coming from even if they disagree
