If she won't talk to a counselor (and she needs more than counseling) and she won't do anything to help herself, you may have no option but to talk with her parents. I assume she's young enough that her parents have legal rights over her. If she's doing self-mutilation, drinking, and drugs, she needs to be committed to a psychiatric unit for intensive therapy and probably psychiatric medication. She sounds like suicide risk who needs immediate and intense help.

It won't be easy to talk with her parents and she may hate you for doing so. But you have to decide whether it's more important for her to like and trust you or for her to receive the help she needs. You can only do so much. She and her parents have to take some steps too. If she's walking around with 30 piercings and scars from cutting herself, it sounds like the parents are oblivious or ignoring the problem. Just keep in mind that you can't make her change and you can't make her parents listen, but you can try.

Becky