possible contents of "living wills" are not an uncommon topic of discussion, even among the young and healthy. I can't imagine that if this really was her wish someone other than Michael would have heard her refer to it, but it would be a most unusual thing for a devout Catholic to say .. it goes so far against the grain. I really am sick over this. God give her and her family peace, and Michael/Greer, et al. hell.
And, as some Freepers have pointed out, at the time Michael says Terri indicated she would "not want to be kept alive that way," the discussion was usually about removing patients from things like respirators, that were keeping them alive.
Discussions were not usually about removing feeding tubes in order to starve people to death.