Taking over mortgage of my partner

[Yangjee Sherpa]

Hello Everyone!

My partner ( who is my own cousin) wants to get out of mortgage and move on to different state with her husband. I do not have my name on the mortgage but just a deed was made separately to be as a partner. So my question is there a way to move the mortgage on me without paying any additional cost like closing cost and gross receipt which usually paid by sellers? Is there anything I need to keep an eye on? We did 25% down when we bought it and we are currently living in this house together. Any thoughts and ideas will be appreciated.