Recently, My elder mother wanted to 'borrow' a English-German translation program. Because, She wanted to install it on her Apple computer. I said she could. She said she needed to get her external drive so she could install it.
She put it on top of her Apple Computer, and went back to watching tv. Without making any effort to look for the external drive.
Almost immediately, I took the program back.
In the past, my elderly mother has 'borrowed' something, with(or without) my permission. Resulting in my never seeing something again or, my mother denying her keeping it. When I find it somewhere else in the house, months' later.