Big one eh. Coming to terms with someone's end of life choices can be really hard.
I sure would have loved mrs hamburger to live longer, but she made her choices and the rest of us had to deal with them - are still dealing with them. I think her family doctor was really the one who took it hardest - and is still having a bad time of it - when she made it clear that she wasn't going to make the choices he wanted her to.
Talking helped. We knew we had a pretty short timeline in front of us all when mrs hamburger got her diagnosis, so there was some pretty intense talking that happened relatively quickly. I think it helped her - to some degree - that she'd caused some other people to talk more as well.
Making her feel any kind of guilt for making her choices wasn't in the books for me - but it was a hard internal fight for me.