Acetic acid, which is the main active compound in apple cider vinegar increases the feeling of fullness when taken with a high-carb meal. The feeling of fullness leads to a lower calorie intake that makes weight loss happen.
The state of being free from illness or injury
What are the options?
Is this woman able to move at all?
If it were me, I would try to get her to move around if possible so that she isn't in bed all day getting sores. If she cant move, roll her over every once in a while in bed if possible.
If she is refusing to drink water and cant chew food well, maybe blend the food up, and add a little water? If she still refuses this, you may just have to make her as comfortable as possible and keep trying to give her food and liquids.
I am not a professional and I don't know the specific details of this situation but this is the best answer I can give with the little amount of info there is :/