"It is also inexact to say she should be "allowed to die."
It would be more correct to say she would be "left to die."
Both are wrong - because she is NOT dying. For her to die, she has to be killed, which is what her husband is trying to do.
"He is still legally married to Terry, and I think the parents made a big mistake in not trying to get her divorced, somehow, from this monster many years ago."
They tried, but her demon husband refuses. HOW in the world is someone allowed to have so much control over someone else, where he even orders that she not have her teeth brushed. You're right - he IS a monster. Oh, and she is NOT unconscious - she is brain-damaged. Alert, awake, responsive, but, brain-damaged.