Sounds like she is either on heat or pregnant. I got 2 rabbits for a friend of mine (different times, bday and xmas) and turns out they were boy and girl and she started pulling her fur out then not long after my friend when to feed them only to discover 8 baby bunnies in the hutch and realised they weren't 2 girls that we originally thought!
My male rabbit went through a biting phase when he was on heat but don't think he pulled his fur out. All this was years ago, we can't have bunnies up here