You're making my point!
You say you would want your dayghter to die and noy suffer. Fine, I can understand that. As a parent that's your decision.
The question I'm putting to you is- what if the husband is the legal guardian and he says to you "_______you, me and the courts say I'm going to allow your daughter to live and suffer,
Now,, what do you do?
Some battles on earth cannot be won.
If I disagreed with the spouse, and he was the legal guardian, I would not make a spectacle of my child's situation.
I would put the matter in God's hands, and let go.
I've had a lot of experience in matters where I have had to let go and let God. It works better.