My husband and I both work full time and have our own health issues. My 2 older sisters are no help whatsoever with my dad. He's always been a difficult person that seems to be worse as he has aged. I've always been upfront and honest about what we can and can't do. I'm tired of the guilt and manipulation, when I have told him we do the best we can and its not our fault he has no one else to help him. What do you guys do to handle it?