My father's wife is not only squandering all of his money, but also making very poor health decisions for him. She has told my siblings and I flat out she is going to cremate my father when he dies, but he has never wanted to be cremated and has told all 5 of his daughters (me included) he wants to be buried. He even bought a burial plot 13 years ago- and still has it ready for him! He has brain cancer and his health is severely declined. We don't know what our rights are since he is married, and we don't know what to do. He does NOT have a living will or legal documentation regarding his wishes and she has spent thousands of his dollars while his mental state declines rapidly (she is not employed, has no income apart from my father's SSI and HIS side-business). What can we do to stop this injustice?