Could this be dementia setting in though?
My dgran used to talk to df in the evenings on the phone (200 miles away). He'd ask her about the day, and she'd say along the lines of:
"I got up early so I could catch the bus to town. I bought the bread from the shop on the corner, but I missed the bus back, so I went to the cafe to have lunch where I met X and Y. I thought while I was there I might as well do the shopping and brought washing powder, potatoes and food for next door's dog.
For dinner I had fish and chips which I got from the chippy by the bus stop..."
He'd repeat this to dm, who would say "the early bus was cancelled last year, the shop on the corner shut over 5 years ago, Y died 15 years ago, she would never have managed to carry that amount of shopping back, next door never had a dog as long as I've known them (30 years) and the chippy by the bus stop because a Chinese last year. There's something wrong."
Df didn't want to admit to this until we went to visit and found she'd been living off increasingly stale bread and never went out. Her freezer was full, it has to be admitted... of 30kg of lard and about 6 dozen eggs. 
The fact that she was living in this dream world hid the problem for too long. But she was happy in the dream world, happier than she'd been for some time, I think. Unfortunately, it also meant that she wasn't safe in her own home. Although the lighting of the gas fire decided that by her method:
- Turn gas on in lounge
- Go to kitchen and switch on gas hobs.
- Light rolled piece of newspaper from gas hob
- Return to lounge and use flame to light gas fire
- Return to kitchen and put newspaper in sink (hopefully full of water)
At any point she was liable to forget what she was doing and just drop (literally) what she was doing. The neighbours told df that they were having to bang on her door and get entrance (they had a key) to turn the gas off when the shared drive started smelling of it after she'd stopped after step number 1.