This person has been bothering me the entire school year, and I'm happy that summer is close

In November of 2023, me, T, and H was talking in our ELA class during 9th period. H and I were passing notes to each other like we always do. Suddenly, T SNATCHED the note from my hand and started reading over our notes without our permission and called us, "fake ***" while reading it. To OUR faces. Obviously, H and I were *** about it, but we didn't say anything to her and just stopped talking to her the entire period. After school on Thursday, in ***, H opened up to me that T also made "jokes" about her appearance, and it made her feel bad about it. Hanako and I talked about this, and I decided to confront her on *** (I didn't feel like confronting her IRL). I wasn't being rude at all. All I said was that if these were true and she didn't apologize, then we won't be friends anymore. A day later, T responded by being rude (accusing us of 'starting drama' and accusing me of perferring H over her), and her apology wasn't very good (She just said sorry, and that was it). Obviously, we stopped being friends with her because she was lying and not making very good apologies. She gave us manipulative vibes, so we stopped. The entire time to winter break, she would make gmails to us about it, tried making us feel bad , and was just trying to make us talk to her even after we said that we didn't want to talk to her. One day during December before winter break, I emailed her brother about it (which I now know is wrong), and he didn't even believe me or read it. We fought, and I ended up just ignoring his blabbering. He also said that he screenshotted the messages and sent them to T. The next day, H and I got this huge *** about how we were "weird" and to not email her family members. I got scared and I tried talking to thr counselor about it, but she took her side just because I emailed her ugly *** brother. And actually thought she was "joking" she literally was just acting like the victim and lying, and the entire time I was ***. After that whole thing, we stopped talking almost entirely. I told almost my whole friend group about it, and they were supportive. Once, I even told another friend about it, and they took my side. But T really tried to persuade them by calling me a "hypocrite" because she thought that I said that she was playing the victim over her crying when I never said that at all! I didn't even mention her crying. She even told her other friend (very poorly) it and still continues talking bad about me even after I told her TWO times to stop. She somehow thinks that I talked bad about her because apparently some I don't even have classes with and someone else "told her about it" I didn't even talked bad about her after that time she made me *** yell at her during lunch.

T even tried talking to me about it during 9th period a month ago but I had to walk away from her because she kept lying and even put another person I was friends with in there because she thinks that I have standards (I don't) and assuming things.