I don't want to be friends with an autistic girl
Are you saying that you do not want to be friends with the girl just because she has autism?
I just am not interested in talking with her. She is kind of annoying.
It's bad to not want to be friends with someone just because they have autism. You shouldn't discriminate against people who have conditions that they have no control over. I think you should try to get to know this girl because she might be a very good friend.
I don't want to be her friend. I'm going to stick over here.
Well just try to check yourself for the reason you do not want to be friends with her. If it is simply because of her autism than this is pretty inconsiderate. If it is simply her personality than that would make more sense.