I do agree with posters here who say that this is probably the start of dementia/Alzheimers. Back in the late 60s, when I was just 19, I spent a whole night at my grannie's house with her, because she had phoned in the evening to say the walls were running with water again. I took the call, but when I asked mum (her daughter) to come and talk to her, she just burst into tears, which shocked me as she was a strong person. It was just before Christmas, and my dad was ultra busy in his retail business with Christmas orders. Mum refused go to grannie's house, so I asked for the family car and drove myself there. I tried to get grannie to go to bed, but by then she had a problem with "blue fluff" which was everywhere and would grow if she went upstairs. We spent the night together downstairs, with her hallucinating in all sorts of ways until I rang home at about 6am in tears. I wanted to know what I should do, but my dad said that mum had her bag packed to leave if I brought grannie home. He also said I shouldn't call an ambulance, as grannie would end up in a notorious "mental" hospital. what to do? I took her home to our house...mum didn't leave, but the stress of having her live with us (I had 2 younger brothers aged only about 8 and 10) was enormous, especially for my mum. I gave up my bedroom for grannie and slept on the sofa at weekends when I was home from uni. My mum fared very badly in all this, and the guilt I put on myself for bringing grannie home still weighs on me today. Basically, what I'm saying in all this, is use all the facilities/agencies available to help this poor person (and her family). Such help and understanding really wasn't available in the 60s and these are more enlightened times. Needless to say when my mil was going through the same issues we got her a place in a comfortable nursing home near to our home, where she could be visited by us most days. Sorry to have written at such length. It's probably an indication of long term effects of not dealing correctly with the situation
Help is available, please encourage your friend's family to ask for it