She lives in the flat above me, and up until the summer I barely heard a sound from her and her husband. Then one night, at 2am, she rang my intercom to be let in. That was odd enough because she had her keys in her hand! But she also didn’t have her teeth in and could barely walk. She didn’t appear to recognise me and didn’t apologise for waking me up. Totally out of character.
Since then she’s had a couple of driving incidences and has had to give up her licence. Then, a couple of weeks ago she threw her husband out. She used to be pottering around in the garden by 7am every day but now I can hear her moving around all night! I rarely see her during the day anymore.
Tonight she has rang the intercom twice; first at 2.30 and then at 4:30. The first time she said her niece was outside waiting for her but there was nobody there! I watched her go upstairs and was listening out for her to shut the door, which she never did. I could hear her talking but I was sure she was alone so I went to check on her. Her door was wide open so I called out to her and she thought I was her husband! She wasn’t at all bothered about the door but I said goodnight and made sure it was shut when I left, obviously.
When she buzzed at 4:30 she told me she’d just popped to the shops 
I told her I was very worried about her and she really mustn’t go wandering off at night. She told me that she never goes out at night and then said it’s been dark all day. She clearly has no idea what’s day and night anymore!
I’m not complaining about any of this. She’s been a good neighbour to me and I’m really sad about what’s happening to her. I know social services are already involved but I don’t know how to contact them. I really don’t think she can be left on her own all night if she keeps wandering off outside.
I’d be grateful for any advice. Thanks.