Firstly, you and @Alder have my utmost admiration. It's truly fascinating to read your posts about how your mind is (or isn't!) processing things, so thanks for posting.I didn't mention losing things and how exhausting it is trying to find them again. It can take up so much of my day.
This afternoon I lost my house keys and I was going backwards and forwards from the car to my handbag and back again thinking if they're not in one place they must be in the other. But no. This is the first time I've lost my house keys. I know they're not really lost. They're here somewhere. I will have another look later.
A worrying thing is when I go to get something and it's not in its normal place my first thought is that someone has stolen it - that being the only possible reason it's not where it should be. This is worrying for two reasons. Firstly, I know quite well that nobody has been in my house and secondly it worries me because I've read so many times about PWD accusing other people of theft and I just worry if it's another sign. So often I eventually find what I'm searching for in the first place I looked.
The thing you said about assuming something has been stolen is particularly interesting. As you say, it comes up time and again on this forum. I wonder why your mind immediately jumps from 'I can't find it,' to 'Someone must have stolen it!' How come you first thought isn't, 'I must have put it somewhere else/maybe it's in my handbag or on the kitchen table...'? I don't have any answers - I'm just curious about why your immediate thought is 'theft'. Is it the logic factor perhaps? Clearly, you still have that and are able to think things through. Perhaps without logic theft is the conclusion we would all come to!
My mother thought people hid under her care home bed during the day (invisibly...) and came out during the night to steal her things (it was always her favourite flowery knickers) and break her glasses. Logic gone. Completely.