Sometime you just have to stand up for yourself.
You don’t have to win. You just have to be less of a target.
Problem is, kids also use social media to bully. Kids have committed suicide because of cyber bullying. Lock out her computer and cell phone so she is not exposed to that. And get her out of that place asap! Homeschool! You can do that in the evenings, if you work outside the home during the day. I don’t know the law in NC, but even if they require you use their curriculum, she can do it online. Don’t worry about her “social development” , if she’s out of school. The kind of that that kid’s get at school nowadays does more harm than good. The important thing right now is her safety. Bring her home. It would be terrible if something happened to her, if she remains there. Am I being alarmist? You BET I am!