shes already 16

Hi, My daughter is 16 and has only just received a diagnosis, last week. My family and I have been struggling along trying to get someone to listen to us all this time. She has been through the CAMHS 4 times and after about a year of various therapies and parenting classes we are quite relieved that someone has finally listened to us. Our daughter has quite violent meltdowns and has been through a few schools as well as being in a small amount of trouble with the police. Could anyone offer us any advice on what steps we could take next please?