We are experiencing exactly the same situation with my mother right now and she also lives alone. She is of the view that she is sharing the house with my father, her brother, and her parents. Until recently she had just spoken about them being there - not quite sure if it was a dream or not. Now however things have changed and she has starting to act upon what is her "reality". My sister visited her to find my father's suit hanging up in the lounge - she'd put it there for him to take away with him next time he visits. She had also removed a considerable sum of money from the bank to pay my father for doing her garden for her.
It all came to a head the week before last, when she thought my father had locked her in the house and gone away down south with the keys. So she phoned the police! I had a phonecall from a lovely police officer who asked if I knew where my father was as they had just had to force entry into the house. He was rather surprised when I said he and the other people "living" there had been dead for 10+ years. Even more surprised when the missing keys were sitting on the chair next to my mother. He did however deal with theh situation in a lovely manner so much so that my mother's recollection of the whole thing was that she had been selected to be taken out for the day by a policeman !
Upshot was that the police took her for an immediate assessment to see if she was ok to stay in the house herself that night and they then wrote a report to her Dr saying that she was considered to be a vulnerable adult who is "at risk". Last week, she had a visit from 2 doctors and a CPN (more attention than she's had for past 4 years!) and they have persuaded her to join them 3 days a week for next 6-8 weeks at a local day care/assessment centre. She has agreed to go as she thinks that they are going to be staking out her house looking for my father to appear again, whilst she's in daycare!
Maybe you should let the police be contacted - it might expedite things a lot quicker than conventional means.
Fi
