When BM was married to my FH, she never legally changed her last name to his. However, she continues to use it and claims to him that she can legally use it (even though she never changed it). Even though she claims this is her legal name, she files her tax returns with her maiden name. He has been trying to find out why child support can never catch up with her when she starts a new job and why her tax return is never taken even though she owes him a couple of thousand. The state even has a service that he paid for that put her in their system so that her arrears would be taken from her tax return and the arrears would show up on her credit. We think it's her last name that's causing all the problems since she uses his name with family court. Is there a way to get the court to change her name in the case paperwork to her LEGAL name? She has skipped town again and no one wants to start the process of trying to locate where she works, etc.