Yes, as Fred Nerks pointed out, there are people who are so defensive about having made the "tough decision" to starve/dehydrate one of their own non-terminally ill relatives to death, they insist we all must agree it was The Right Thing to Do.
Their greatest fear must be to see the patient recover enough to vocalize.
Hence they become dead-set, so to speak, on "seeing it through to the end."
Perhaps Beth Gaddy will be deterred by the negative publicity, however. It's not too late for her to back off -- though it was for Michael Schiavo after Judge Greer put the state's imprimatur on Terri's "wish" to die in 2000.
Somewhat reminds me of the fervor and strident way that the Homosexual Lobby insists that they have no choice and it is a natural and healthy alternative lifestyle. I guess starvation/dehydration is a natural painless alternative deathstyle.