Helloooo. This is Naomi Mulciber, Hit's little sister. She went missing in the middle of last school year and was finally found just after Ilvermorny's mess ended. She was allowed to take her exams and passed just well enough to be a fourth year like she was supposed to. She's still 15, though, because her birthday is in September, just after the cut-off for the school year. People probably expected her to be the same shy, quiet girl - perhaps even more reserved than normal, actually. But she's gotten worse over the past few months. In fact, she's become completely horrible. The only person she really doesn't seem to hate is her brother, Josiah (also a fourth year. The Mulcibers have strange birthdays
)
Her app is here:
https://www.pottersarmy.net/t22313-mulciber-naomiBasically, she isn't really nice to anyone, and covers up her insecurities through sheer intimidation, shouting/screaming at people, and coming up with whatever sarcastic, mean, insulting thing she can. And she doesn't take well to people trying to come back at her. So far, nobody has really messed with her. But now she's up to something with Apollo - and those who know her new personality might assume she's using him somehow - and her attitude is getting worse.
I would guess that people either hate her, fear her, or think she's ridiculous and think they can get her to go back to normal. Good luck to them. Professors are probably keeping an eye on her, secretly or otherwise, and I would wager that anyone who used to think she was attractive in some way are probably questioning that decision.
Her hair constantly changes color, she pretends to like Potions better than she really does because she thinks it might make people worry what she's up to, and is probably best at DADA because she's focused on it since getting back from the kidnapping/torture/other awful things. If anyone wanted to try and befriend her, asking for help with that class or with Astronomy might be a place to start