I'm sorry to hear about what your grandmother is going through. My grandfather made it to 90 years old and had to move into a nursing home. I find solace in the fact that he lived so many great years, he died shortly after. But I agree that it should be legal to die with dignity if you so choose. Be strong for your parents and my deepest condolences.
Thank you for your kind words. My grandmother has also had a long and good life and now I just hope that she doesn't have to suffer for too much longer.