IIRC, the Pegasus was a gift right? Instead of being the child chopped from her head, since they mentioned her using it to do errands. But isn't it also that weird bit where mythological heroic spirits have weird alternate interpretations that can coalesce into one, like how different versions of the myths enable them to have multiple classes, skills, or NPs?
Chrysaor should get fitted in sometime as another NP for her, but how would they do it, I wonder.
As for the rape part, eh, Nasu will do as he will. However, if he still wants to have Medusa have the same anti-hero vibe, than he should consider how those changes will affect her motivations and the character itself.
Like, in Hollow, if I am remembering the scene where she talks to Avenger right, she used to like humans, so he might want to nail down clearly what went down, and Athena/the curse/whatever, because things are getting kinda wonky.
Were the Gorgons ostracized or were they idols? Were the Greeks starved tyrannical lolicons, or dudes who just wanted to hang with cute girls and got beatdowns from ol'Dusa?