The simple answer is yes. Dialysis will prolong her time on earth. I am not aware of any recovery when it comes to patients of dialysis. To my understanding, it only offers the body the ability to release toxins from the blood, which is normally the function of the kidney. I have seen people who live for years on dialysis. In comparison, I have never heard of any one living very long with 9% kidney function. Unless there is some reason unknown to me for not doing so, I would suggest getting her to go. Scientifically, it is the right answer. The emotional, spiritual, and psychological side of this are up to you and your family. I wish you both well.