Despite the arguments previously in this thread, Sasha is a more fleshed out character than Mia because of everything she's already shown us. That makes her more interesting than Mia as well, despite everything she's done and said. Mia just sits there and acts innocent and it feels like Sasha was a bitch to her just to make us feel like Mia is worth something in the story. She also just follows whatever the MC does in the dialogue choices, like she's the second main character or something (just with even less personality). Even visually, Mia is a boring character in a game where the other characters have a strange quirk about them that seems more focused. She almost overcompensated on the quirks and ended up being really bland because of it.
Just wanted to rant about that, because I feel like she's a waste of space right now and I'm not even sure if you could fix that in my eyes because a big problem I have with her is her look (not the hair, the rest). Not targeting any specific comment with this post, I didn't read 99% of the thread to be honest.