Mean Girls

I am finally in my Social Studies placement! I love my teacher, he's really good with the students and made at least this first class interesting. I feel completely at ease with this group of students, I only have one concern. (For the sake of this story I'll call the student Z and the teacher X)

My teacher told me this girl is always picked on in his room. I hate to admit this, but I understand why - she's pretty annoying. I feel so bad for her because she doesn't realize she's doing it. She followed my teacher around the entire class and kept saying his name VERY loud until she had his undivided attention. She asks questions after my teacher has repeated the answer hundreds of times. She gets in your face - not to be mean, she just doesn't get it. She talks about stupid topics like today she talked about how cool her pencil was. The other girls were all like, "Z, shut up" or "Z, that's dumb". It's not only the "popular" girls saying it, it's everyone. My teacher said he tries to stop all these girls but doesn't always catch them making fun of her. And he's annoyed too. He says the principal deals with her one on one because many people can't handle her. The boys laugh at her too. She's on an IEP and obviously has behavioral needs, but its to the point where I am not sure how my teaching will go. She didn't seem to want my help, she only wanted my teacher's attention. Kids can be so mean though and I know she has to hear what they say. I just hope I can get through my lessons...