My mother in law was diagnosed approximately 10 years ago with Alzheimer's. She lives with her partner and they have been together for 20 years on and off but have very separate accounts and his money is definitely his money alone. When she was first diagnosed we talked with her about power of attorney and putting her only son in charge when it was deemed necessary but her partner said it was too early and it wasn't happening. Years have gone by and her illness/ memory worsened but still her partner put his foot down and said no. Now it is too late for poa as she cannot communicate with us and just talks jibberish. Our problem now is her hygiene as her partner is unable to wash or provide any personal hygiene for her and she, actually without sounding horrible looking like a tramp, smells awful and has very greasy hair as she's not showered or bathed for about 4 months. My husband mentioned to her partner that we needed to discuss his mothers welfare and he went berserk saying, as she didn't do much all day she didn't need to wash...i know it's ridiculous...then threw us out. He now will not discuss her welfare and we just don't know what to do. She seems happy enough with him but he is actually a bully and as he says to us it's his house and his decision. We just feel so sad for her. What should we do?