If she goes straight from a hospital into a care home she will be entitled for NHS discharge funding for a month. If they think you are moving in solely to secure her house as an asset, I don't think it would work. If you get the right care home she will almost certainly be better off in one. The council will review regularly if the home is right for her or not. Getting mental stimulation of the care home, good diet, routine, supervision, lifting of day to day responsibilities and regular meds can make a huge improvement. Never rated the PoA for Health and welfare as experts can pretty much overide you anyway. My dad tried to care for my mum but it ensued a lot of stress and impacted his health. You need to show that you fully understand all the risks and sacrifices and practical ability and availability to care for her before they will leave her to you.