illinois Divorce final in May 07, Joint custody with father as custodial parent. Mother has not seen son since July and has spoken to him since October. She has quit her job and moved and hasn't told me where she lives. Can I get custody changed to sole custody or do I need to wait??? What happens if my son needs medical care and according to joint custody laws I would need her consent for surgery or such?? Of course, I could be wrong about that law. I am raising my son to the best of my ability but, still don't know what to do about a Mother that has nothing to do with her son.