Advice please. 83 year old father refuses to retire although his physical health is deteriorated he is still mentally competent to perform as a plumber and sculpture artist. He feels he can't retire to care for two adult mentally disabled children; an adopted special needs niece and her schizophrenic adult daughter. If something happens to him, the girls are not capable of caring for him or themselves in their large messy home. He is invited to live with his son and I, but insists on staying in his unpaid for home and caring for the girls. He has almost lost his drivers license from accidents and the girls rely on their church members for rides. They have jobs and get Social Security Disability. The father gets Social Security and self-employed income but his health is rapidly deteriorating with age. What can we do to help him and the girls to have a better quality of life?