It sounds like you need some help from someone really experienced. Although it sounds as if the student therapist wasn't treating you optimally I'm not sure it was unethical. It seems as though she didn't make the right call and then the treatment went downhill from there.

For your own sake maybe you can forget it and move on. Ask someone you trust for a referral to a therapist who is much more experienced with your type of issues, and get the help you need. You deserve it.

Best of luck.