A Reply to findingmyway and Bmandur Jios
You are mostly right, in my opinion, about all that you've said findingmyway ji (and Thank You for the Compliment, we did ALL {three sons, one daughter, a cousin or two} gather round my Mother); though, while being their to care helped my Mom a lot - and we did not see this as a burden, like those who you laudably view with contempt because the would not have done so - I still ponder, and can never forget, the way that my Mother suffered; gasping, gagging, choking, trying to swallow food & throwing up - all of it, air, food, puke, struggling to make it through, past a HUGE Tumor on her throat; or deny that I still feel like it would have been OK to end her suffering as soon as it was absolutely clear that her Cancer was truly terminal.
Though her admiration for the way Native Americans, living in a time and place where every mouthful of food meant life-or-death for the youngest people of their tribe, would "Go and sit by a rock and wait for something to eat them", was not applicavble to the circumstances surrounding her Cancer Death; I think that she would have approved of my opinion - or even my decision to give her the relief that only death ever could, and only Death finally did; only a little sooner than it worked out that it did do so in the end, anyway (if my Sister would have agreed to too - but that's a whole other story!).
Reference:: Sikh Philosophy Network http://www.sikhphilosophy.net/sikh-sikhi-sikhism/33308-what-sikh-attitude-euthanasia-mercy-killiing.html
She was simply to sick to assert her own Authority, or I think she would have ended it herself, to be quite honest; she had no Fear of Death - one of her Son's took care of that, when a white streak appeared in his hair (see my "Introducing Myself" Entry), after he talked to Our Beautiful Lord (Hirm doesn't mind being a Buddhist, or any other Faiths Beautiful Lord too, after all!)!!!
Reference:: Sikh Philosophy Network http://www.sikhphilosophy.net/showthread.php?t=33308
Bmandur ji; as I'm really impressed with Sikhisms Teachings, and I'm - basically - more of a Mahayana Buddhist than an adherernt of any other Faith (Hirm said Hirm likes the Dali Lama), I think that it's WONDERFUL that this 'person in a comma' responded to the tape recorder of the Guru Granth Sahib being played; Mahayana Buddhists come to a dead persons death bed, then chant and play musical instuments to remind the Clear Light part of the semi-deceased (semi, from a Buddhist POV) that the Path after Death has Three Forks: You've attained Nirvana in Life, and will live in Shambala; you and the Clear Ligh Entities who've Judged Yor Deeds have decided that you should Reincarnate in a seperate, new body - a whole new Life; or (and thus the drums and chanting) you and your guides have decided that, in the life that you might or might not chose to abandon, though you've already "left" your body, you've not done all that you can and should do, and so you respond to the drums and chanting and return to your not-quite-so-dead-as-many-Non-Buddhists-might-think body, to continue living the life you've decided should not end yet (sorry if that's a redundant statement).
I guess that
"What Should You Do?" is to decide how you feel about Compassion - and whether you really believe that there's "something else"; something that comes after living the life that the afflicted person has lived, that makes Death a not scarry, not really real thing; then, if you DO decide that Compassion is Good Reason to Act, and you DO decide that you Rweally believe in some kind of Continuation, then you should ask yourself, "Is living in a comma any kind of Life at all? Wouldn't setting this poor soul free, so that they can take another perhaps healthier body; wouldn't that be Better For Them, than forcing them - entirely through Technology (ie: the type that they'd be Dead without it, so therefore it's not part of the Natural Order) - to go one living such a lifeless life?"
When you've answered those Questions, then you'll know what to do.
Remember; Compassion is ALWAYS Very Good Karma!