In reply to Indy:
Been there, just about a year ago now.
It was easier than I thought, because I knew their wishes.
The fact that the care home and hospital f%$&ed it up first time around and prolonged the issue moving from choaked and over quickly to stabilised and allowed to fade away through inability to eat, over two weeks was harder.
A living will was in place, I had to go (drive 3 hours) to confirm the wish having seen my mother in hospital which she had expressly stated she did not want to be taken to, and try to explain to her, at the time frightened and feeling her wishes had been betrayed. She was unable to speak only communicate by looks.
These documents are good, but you cant always stop to read them at the critical moment. Someone at the time in authority at the home needed to know. I think in my situation they had the tougher decision.