My fiance signed as a guarantor on his sister's house awhile ago. The only reason he did so was because he and his sister had a verbal agreement that she would do whatever she could to take his name off the mortgage after 6 months' time. Well, this time has passed, and he asked her if she could go ahead and do what she could to get him off. She completely ignored him, and is not going through with her promise.
Is there anything that can be done?