I honestly think the mother has some serious issues with letting go. I understand completly the bond that they have, and how much she loves her daughter, but could you honestly look at your child in that state, and not feel sorry for them? She has been in that condition for several years now, and to my knowledge will never recover, why tourture her that way and keep her alive?
The husband here is doing the right thing, he doesn't want to see the women he loves in that condition, and I don't understand how the mother/rest of the family could.