She was bitten by a werewolf in her dream, and woke up bit here, I guess. That's what I heard, anyway.
I don't know how it is in your universe, but when people in our universe get bit, they either turn, or die. This friend of ours...she doesn't do either, because it turns out she's already not human and can't be turned. So, at least we don't have to worry about a newborn werewolf?
You didn't happen to hear about a girl who came in unconscious with an ugly animal bite, did you?