hi my mum is 87 and three years into her Alzheimers diagnosis. She lives alone and family go in twice a day to do everything for her. She spends a lot of time in bed and when she's up doesn't do anything at all except sit in her chair. She doesn't go out. Today she has decided that she doesn't need to get up and wants me to buy a chair for the bedroom so that visitors can sit with her. She doesn't have any physical problems but is always tired. Any advice please?