Mt husband and I were divorced in WA State and I have custody of our 2 children. My 14 year old daughter would now like to go live with her father and we have been ordered to mediation as per our divorce decree. The opposing council is trying to tell me I cannot have my new husband in the mediation. 1st, can he decide that, and secondly, he is saying that if I will not agree to those terms we will just go to court.What is involved in that?