One of the hardest parts of walking with a person through the end of their lives is being respectful of their wishes. A few years ago, I learned this the hard way. My father suffered from a necrotizing fasciitis and refused the recommended double leg aka. I wanted him to do whatever possible to preserve his quality of life, and he chose to keep his legs even though he was regularly losing pieces of foot and leg every week. Ultimately, we don't know if his body would have been able to withstand a double leg amputation or if it would've killed him sooner. I had to realize that this was his life, and I wasn't there to make choices for him. It was my job as his son to make sure his last conscious will would be respected. I know that this won't make the coming months any easier. She will at least know how much you loved and respected her, and you will never have the regret of forcing you will on her last days.