As I noted above:
I dont believe there is a sharp distinction between minimally conscious and vegetative especially with something as complex as the human brain. Such categories are man-made subjective classifications. Nor do I accept the characterization of Terri as vegetative since there were numerous people with impressive credentials on both sides of that diagnosis.
A valid point however by trying to equate the 2 you seem to be implying that if only they had held off on killing her this would have saved her.
I think we agree that no one in that situation should be killed. Despair is both a sin and a logical fallacy.