I'm a freshman in high school, and my ex-best friend from elementary school and I have 2 of the same classes. Needless to say, we ended on bad terms, with her saying that all my friends would leave me. Lately, she's been approaching my friends, etc. I had a indian friend, and she got mad at me for not giving her answers on a practice for the ELA Honors quiz next Tuesday. I already turned my work in, so I told her that I would check her answers. She got angry and told me that English is really new to her and that I wouldn't understand. Yesterday, she approached my ex-best friend (who I have a fear of) and asked to be partners, and since I had no other friends in this class, I was alone. Then my other friend stopped meeting me after school, and she gave me this weird look yesterday, like she was nervous or uncomfortable, and hadn't texted in three days. I don't know if I'm overthinking this, but I've always had a fear of being abandoned since it happened a lot during middle school.