On reflection, the process can be extended to people.
Granma is very ill, her mind is gone, she lacks the ability to eat, her kidneys have pretty much failed. The consensus of the team of physicians is that further treatment is counter productive.
Then from the back row, a grand daughter out of her mind with no mental control begins to shout....It’s grand ma. We have to do what ever can be done to save her. Yes, dialisis. We must by pass her kidneys to save her. Yes, even for a few days if it will save her, we must do what ever that needs to be done. I don’t care a whit for what the doctors think, their collective best judgement. It’s granma we’re talking about.!
For us the decision point was whether we were prolonging Dad's life or prolonging his death.
Still wasn't easy.
“Then from the back row, a grand daughter out of her mind with no mental control begins to shout....It’s grand ma. We have to do what ever can be done to save her. Yes, dialisis. We must by pass her kidneys to save her. Yes, even for a few days if it will save her, we must do what ever that needs to be done. I don’t care a whit for what the doctors think, their collective best judgement. It’s granma we’re talking about.!”
That’s a granddaughter we could all do without.
.
The Grama you describe, is actively dying. While I don’t believe in euthanizing people, she will die on her own if allowed to. Dialysis may prolong her life, but dialysis is a miserable way to spend half your day, 3 days a week, only to feel lousy all but a few of the other days.