To give some background info, I(13F) used to be friends with a mildy(?) autistic girl(13F) in school, but told her I didn't want to be friends because she kept bothering me.

She's annoying, really annoying. She would follow me and try to sit next to me at lunch, and when I'd walk away she'd start following me. Once I told her I wanted to go with *only* my friend to the school library (not to be rude, I just wanted to study with him) when she saw my friend she asked him "wanna go with the library with us?". There have been multiple instances of me being annoyed by her. In fact, when I told her I didn't want to be her friend she got all upset and called me a bitch.

She only has one friend who she barely sees (my friend), only sometimes during lunch in school. A lot of people gossip about her and call her autistic, and I feel like I'm being an asshole for trying to ignore her while she constantly tries to talk to me or follow me, she's in almost all my classes. She barely puts effort into school, once I had to come over and she told me she doesn't do her homework, she does it in lunch or during class, and almost made me fail a project once (we had a group project and I ended up with her + other kid)

AITA here for refusing to be friends with this autistic girl?

tl;dr: Autistic girl is bothering me and is being kind of rude, I don't want to be her friend but feel bad because everyone makes fun of her. 