Hi! I just commented with a huge spammy list to Chaku, so I thought I'd do you the same pleasure. XD
In order according to importance to Emma...
Storm / Britannic - Ororo's probably going to be a little put off by Emma. She isn't a fan of people who flaunt their cash (despite her willingness to give). Plus, Emma's cold and a Scorpio and Ororo's motherly and a Taurus. So, they will either do really well together (opposites attract) or end up hating each others' guts. Traditionally, I believe it's the latter. Brian, on the other hand, is probably a bit smitten with Emma. I've been dying (for years) to do something with Brian and the Hellfire Club. If it could tie in Emma (or Betsy), all the better. Anyway, he's a doctor, so if Emma gets any booboos, he'll gladly take a look.
Asp / Grasp - Asp is going to be infiltrating Xavier's for Stryker (avoiding telepaths by emitting radiation ala her mutation), so I think Emma would be suspicious. Asp will also be hitting on anything male that moves (which includes Scott), so that might tick her off too. Grasp (Kiernan Murphy) is a fellow telepath (though, tactile only) and a conman. I'm sure he'd be impressed and inspired by Emma, and fancy her a bit. But by the by, telepaths > everyone. Bwahaha.
Dazzler / Gambit - Fellow tabloid-filler, I think Alison would be a kindred spirit to Emma. They're both powerful women, independent, huge... She will probably be seeking advice/friendship from Miss Frost. Gambit is a semi-n00b to the school (less than a year), and just like with most men, I know he'll find Emma gorgeous. There's lots of room for flirting (despite them both being 'involved'). But he's yet to come out about lots of secrets from his past, so if she wanted, she could blackmail him to N'awlins and back. Lol.
Torrent / Zap - They're both X-Men, teachers, ex-students and semi-domestic. There's lots of room for interactions here. Troy (Torrent) is a hydrokine and the music professor/wandering minstrel. He's 'life mates' with Omen/Will (a telekine). I'm sure he thinks Emma is the root of all evil, but wouldn't say it to her face. Unless he was high, which is a possibility. Zap is an electrokine and married to Mars/Ronan (super-inventor/mutant detector). They have a son (Brogan) and various other family members throughout the school. She helps teach AV/electronics and subs when needed. If Emma needs her laptop fixed, Zap's her girl. Just don't touch her man.
Dukes / Scoot - My sweethearts. These two are by far the nicest characters I play. Dukes is an updated version of Blob, following film!canon. He's going to be coming to Xavier's soon and will be a huge, easy target for Emma if she's PMSing and wants to make someone feel dumb (not that your Emma will feel the need, lol). I don't think he'd be as smitten with her as most guys. He tends to like motherly/shy types. As for Minka/Scoot, she's a wall-crawler/speedster and 18, so, like most teenage girls in the Marvelverse, I bet she hates Emma. Time will tell. But she's a bundle of joy (and candy wrappers), so I sort of want to see how their dynamic would be.