robinw, my FIL had Parkinson for 20 years , lived a ver full life until he hadand a stroke, unfortunately SIL wanted him resussed, it was a barbaric and unkind thing to do, he was 89 and had had enough. She then kicked herself everyday until he died, saying why did I do it?
My DH sat with him one day and FIL sat up in his bed and said clear as a bell "LET ME GO" he knew, and that's what he wanted. So DH told the nursing staff no more medication or interference, the next day when all three children arrived at his bedside at his bedside, he smiled and then just slipped away. It was so calm and pleasant for him and all concerned.
I know how you feel, it was awful while FIL was in hospital, the staff were wonderful, but food was put in front of him, he couldn't eat it as he didn't have the strength to feed himself, so it was just taken away untouched, he couldn't wash or shave himself, so we had to do it and it was so unfair on him, he hated everyone having to do this for him.
it is not an easy decision to make, especially as it's your mother. My thoughts are with you, take care.