I have 3 here (help me please). The first is Ember Hart, here. She is also an Arcane Protector, so they would know each other. She's a friendly girl, really good at kicking ass while looking hot, and generally respects people until they betray her and give her a reason not to. She would definitely respect Erik a lot and really look up to him, so she might try to whittle down that sour exterior with her charms and smiles (not in a sexual way, though!)
My second is Transmutation Arcanist, Gwen Fawkes [collectedchaos] She is a conflicted sort of girl, torn between wanting to be a little wild and loving her magic and the fact that her family is basically all about discipline, planning, neutral judgement, and control. She definitely is a handful, can default to bitch until she knows she can act normal, but is definitely capable and independent and strong and no-nonsense (with a no bullshit policy to match) She may be brutally blunt, but she comes from a good place.
Last is Divination Arcanist Kieran Lark [divineseconds] He is the twin brother to the current Family Head, only missing receiving the role by about 2 minutes. He's a calmer sort, more wary and somewhat prickly upon first meeting, but he genuinely likes people so warms up once he discovers there's nothing to be suspicious of. Hates the stigma Diviners get from being able to see the future and therefor can be hesitant around the other families. Generally he's a low key kind of guy, though.