My father in law had a stroke recently. He has lost his short term memory. He doesn't remember to take his medications and apparently has had difficulty with that for some time. He is also diabetic and his daily nutrition needs are not being met. Unfortunately my mother in law is not much better off than he is. They are insisting they are fine and don't need any help from their children. We are trying to keep them stay in their home as long as possible and have tried to hire a care giver to stay with them during the day to fix meals and administer their medications. My father in law has become hostile and combative. What do we do?