I am 70 years old and draw disability from the VA and social security

I anticipate that folks are going to be hesitant to provide a clear answer without having a long face to face meeting, and because it is always difficult to guess what a judge would do.  That said, she would have a claim to divide the property you acquired during the marriage, and she has a theoretical claim for spousal support.  Her spousal support claim is not a particularly trong one due to the fact that you are 70 years old and not employed.   With the caveat that I know very little about your case, I am skeptical that you would be forced to pay for anything in excess of what you are paying for now, and I'm skeptical a court would even require to continue making the mortgage payment.  But you need to consult with a family law attorney in your area who will go over all the claims in your case and offer guidance for your next steps. I wish you the best.