A bad start

I was new at a school and a girl who i called my friend started to degrade me she would say that in was dumb and would never be as good as her she would get other people to hate me and talk behind my back. It seemed like that no matter what i did she was there telling me how terrible i was at everything i dint want to believe it but i slowly started to believe her. Soon she left to go to the gifted and talented school. But after school we went to a class together with community education and she would say all those mean things to me it was two hours where she could just rant about how terrible i was and this time she had something new to say she said I was dumb because I didn’t go to her school and would have one more reason for me to believe her. My school closed and i was sent to the gifted and talented school. It was hard making friends when she was always there to stop me i dint have a place to eat my lunch because my friends were her friends so I couldn’t sit by them. And eventually they started to hate me because of all the crap she made up. She was there always tormenting me.