Soooo. Most Slytherins are probably pretty awful to Corrine, but I imagine that there are a few who make it their personal duty to make her life hellish. I think most of the time she just defends herself, but if she had the opportunity to make a point, she probably would. In her history I wrote that this year someone cornered her and she ended up holding him against a wall by the throat with a pair of invisible hands and getting a bit bitchy with him. I want someone who persecutes the fuck out of Corrine, with some deeper motivation than the fact that she's muggleborn. For example: They're a halfblood trying to hide that fact. They are attracted to/jealous of/sympathetic towards her and hate this fact. Etc.
So this is where you can let the vicious nature of your character's run rampant with a person who will keep herself at least passably conscious in the meantime. There's no real number on how many people are in this little set of people so yeah. Just reply if you're interested and let me know what their deeper motivation for wanting to kill her is. XP