@Alwaystoblame My now 20 year old son was very similar in highschool, multiple aggressive incidents in school, bullying incidents, suspensions, threatened with perm exclusion, high abscenes and potential PRU referral. He wouldn't engage with CAHMs or any MH services even after a hospital admission and the Mh team came to him and spoke at length about his MH and what can be offered moving forward he refused to engage. His behaviour at home was as bad with his siblings, he wouldn't be aggressive but he was abusive, he would steal off me and my other children, smash up my house when he didn't get his own way etc. He was however diagnosed ASD, but mainstream schooling. I was at my wits end, and for the safety of my other children considered placing him in foster care at 15.
I have little advice on the schooling, but I will say, he's now 20, he has a good job within the NHS, he has a steady relationship, he functions well. School was not an environment suitable to his needs, but his time at college passed without incident, his attendance was good and he passed his courses with decent grades. I know previously you have said that you feel she needs the structure and support of school, but this may not be the case, the freedom and adultness of college can sometimes be the positive structure that's needed to make improvements.
I hope you are ok, I understand how hard this situation is, but there can be light at the end of the tunnel x