hi my father has alzheimers (coronary) there are different types... we had to put him in a home in january he lived alone but i live 180mile away and sister 40mins driveay...he was saying things like your mother , my dad was very fit and walked every where and 3 times a day he would go for walks for an hour or 2, but then he would go looking for a dog he didnt have and silly things like that..... at first we got him some care to the home which made sure he had 3 meals a day, but he had a really bad fall and ended up in hospital when the carers came round they were shocked to see him covered in blood... we put him in the home for respite care which ended up being permanent as we agreed that was best thing for him and we knew he would be well cared or nd had ppl there to talk too as my dad is very sociable... tbh tho my father seems the only sane one in there as the other ppl have more advanced than him..... its a very hard decision you willhve to make for her safety. but you say your brother in law lives there? cant he care for her.. if not and you decide on putting her in care then your brother in law will probably have to find someere to live,,,,, maybe start with the home help first