Sam,
I am sorry to read that your mother is not doing well. I will keep her in my thoughts and prayers.

Eric is right...you need to be focusing on your mom right now. Your mother needs your support and focus. Your wife and what she wants can wait.

I agree w/Eric that her agenda is totally different from yours. You must do what is right for you and you alone. Please understand that no matter what you do, it most likely will never please her or be what she wants.

Please, Sam, don't sign anything or agree to anything at this time. Your attention is elsewhere and if you do agree/sign something, it may not be in your best interest and you'll discover this entirely too late to change things. Put the paperwork on the back burner for a while.

Please take care of yourself and spend your time w/your mother.

Sit quietly, the answers will reveal themselves when you least expect them to.
The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.