My question involves name change laws in the State of: at birth my daughter had my last name because her father was locked up, but when he got out I changed it to his last name on the birth certificate but I didn't change it on her ssc or her insurance and everything else I have off hers, but now her father dont want nothing to do with her, and I want to get her last name changed back to mine how do I do that? How much will it cost?