Based on your financial expertise, provide your response or viewpoint on the given financial question or topic. The response format is open.

Helping girlfriend accelerate credit score improvement
This is an all too common problem and is not easy to resolve. Divorce agreements do not alter prior mortgage contracts. Most importantly, the bank is not required, and will not normally, remove the girlfriend from the mortgage even if she quitclaimed it to her Ex. If he has abandoned the property there is a good chance he will not make any more future payments. She should be prepared to make the payments if he doesn't or expect her credit to continue to deteriorate rapidly. She needs to contact her divorce attorney to review their mutual obligations. A court can issue orders to try to force the Ex to fulfill the divorce agreement.  However, a court cannot impose a change to the mortgage obligations the borrowers made to the bank. Focus on this. It's far more important than adding her to a car loan or credit card. Sorry for the bad news. As for the car loan, it's best to leave her off the loan. You will get better terms without her as a joint owner. You can add her as an additional driver for insurance purposes. Adding her to your credit cards will help her credit but not a lot if the mortgage goes to default or foreclosure.