Ex friend became abusive

Long story. We were good friends during the first two weeks of training week. We did everything together. We always went halfs on ubers , her friends also invited me to everything. She always asked me to sit with them. She seemed nice. She always hugged me every time she seen me. As soon as campers arrived she shown her true colours. We stopped being friends because she kept verbally abusing me. I only had to ask an simple question and she would scream at me saying I never pay attention. I could not even ask for advice on how to help my campers have fun when they were having an off day without her saying she does not want to hear it and is sick of me complianing yet she vented every day to me. I unfriended her on facebook and I told her it were because I did not want to spend the whole summer aurging with her. She said there were no point in us being friends if we do not aurge. She said I caused drama and acted like I were in highschool. As soon as she got her camper who needed help with most things , She were mean to me every day , I cried most days because of her. I tried 3 times to be her friend. She even left me to walk over 8 miles alone in thr rain , I am international. Last week , she grabbed hold of my arm and would not let go , she screamed and swore at me in front of all the campers , all because I looked at her during breakfast. I just looked up to see if her camper needed help because she ignored him an lot. She also yelled at my camper to sit down. He is fully independent but has autism. I told her poliety not to yell at him as he is independent and will sit down by himself. She yelled at me saying I told her what to do and said I acted like she did not know. After I said about trying to get along since we will be working together , that is when she grabbed me because she wanted an huge fall out in front of all the campers and I said lets not do it in front of campers and she tried to stop me from walking away by not letting go of my arm. I got free without hurting her or myself. I did not attack back. I just pulled my arm out of her hand. I walked off crying because I felt horrible and she made up stories about me to people who was not there at the time and those people think I started it all.