My 80 year old mom has not participated in life. Often stays in bed 18 hrs out of 24. Doesn't bathe, cancels Dr appointments, hasn't been out to a store in 3 years. She only weighs 97 lbs because she doesn't want to eat. Stays dehydrated because she says she's not thirsty. She has no physical illness. What can I do to help her? She lives with my Father in another state. He's becoming depressed watching her go downhill and withdraw from normal living.