My children are in counseling also. I am in the same situation with a mother that is causing the issues. The counseling should be about the children and being apart of it is very important. Do not bad mouth the mother but concentrate on helping your child move on. Hopefully you will get a decent counselor because I can honestly say mine is not. She refuses to discuss anything let alone trying to get to the root problem. Basically my children go and talk and we leave. Nothing better. I tried to get them to see a real therapist/psychologist but no one will see them without mothers permission.
Hopefully yours will be better.
Hopefully yours will be better.