Is counseling being done at school?
If it is at school , then they do not usually diagnose, just give school based counseling. Showing child how to function at school mostly. How to use their emotions properly. Ask to meet with counselor and tell them you are willing to help in anyway you can.
If it is not at school, offer to meet with counselor and charge it through your insurance so you have an hour to talk to them. Offer to come to any future sessions with child if they think that would help. Keep it focused on child and bring any important court papers in binder just in case other parent was not honest about situation. Only bring it out if something comes up to prove a lie. This may be a good thing as if the counselor is good, you can have family sessions with you and daughter if the therapist is willing. You can offer for family sessions to be under your name/insurance so it does not interfere with her sessions. This prob wont start right away as the therapist will want to get to know her but make your appt with her now so she can help her appropriately. A good counselor is hard to find so hopefully daughter connects and therapist willing to do her job.