OKAY. So obviously she'd probably have the most going on with Clem. I can kind of see things going either way with them because Clem's also a loud obnoxious person that loves doing dangerous shit, but up until she was made captain she's also been kind of a rulebreaker and is not terribly smart about it.
Clem's parents also had her straight out of Ilvermorny and would've been classmates of Nia's parents, and their mothers would've had some overlap in their pregnancies, so they could maybe be family friends?
Ari's also an Ebonhide cheerleader and probably appreciates Nia's whole vibe and finds her to be one of the more tolerable people on her cheer squad. If she's cool with Mackenzie that's always a plus in Ari's book too.
Reece is also a junior prefect! I don't know how well they'd really get on but maybe we can make them do prefect rounds together or something.
And Todd and Ivy probably don't interact w her much, unless Todd's getting in trouble.