Where does this power come from?
Greers finding that Terri wants to die in this circumstance, and dehydration is a mercy killing. All roads lead ... . Why repeat myself. Just why we are in this emperor has no clothes regime that we should kill by dehydration rather than lethal injection, because in the former it is just passive, and the latter active, and just why that distinction should matter, I don't know. Ask your priest. I can't help you.