So I recently stopped locking my room's door at night because there's a network cable that needs to go outside into the living room and there's no reason to remove and re-attach it every day. Anyway, this has triggered my grandmother's weird terror of people coming into my room to take my keys and subsequently using them to unlock doors in the rest of the house. She thinks they'll 'dirty her makeup' and 'poison the food'. We've had no history of break-ins, the main door is locked, and I just want to leave my room door unlocked like any ordinary person does with their house.
Anyway this morning my grandmother came into my room, took my keys and hid them away in a locked room because she was afraid someone would take them and use them for dubious purposes otherwise. God what the hell gramma, you're a bigger nuisance and liability than whatever imaginary threats you think anyone else is going to be.
Anyway, does anyone know how to deal with this sort of thing? She's been like this since I was a kid and she is otherwise in total control of her mental faculties (she doesn't have dementia, can remember things very well, can make decisions, and is always looking out for herself).
Does anyone have any pointers on how to deal with this kind of thing?