Refinancing is the only way to get your girlfriend off the loan, but another question is whether she is on the title. If she is not on the title, then she would have no ownership share when you eventually sold the property, unless you had some other agreement.
well, only way to do it is to do refinance your house again with only your name on it. The rates you get might be lower than your current rate. I would prefer to have lower rate and have your girl friend's name off from the loan by getting the refinance. Please contact me if you have further question.