That happened to me some years ago with a family member..when i called the credit card company to notify them, they asked me for my cousin's information and coincidentally she was there while I was on the phone with the company, I just handed the phone to her, they gave her the options like we can press charges or we can put the account in your name and u pay it.  She agreed to let them put the account in her name, she didnt get the actual card though, just the bills to pay them...they reported it as a new account on her credit report and took it off my credit report and as far as I know, she paid them off. 

So hopefully it works out this smoothly for you, good luck!