Re: angie & co
Ehm, Nike and Pan? They could know each other from Cross Country and might be friends/enemies/ whatever? Tia and Pan might also be acquaintances, because they're both Art History undergrads...?
Nike and Loki? Her brother is his roomie, so he might give her even more reasons to visit her brother in the dorms.
I'm pretty sure I can think of more if you want to XD