This claim is utterly ridiculous. I am at an impasse with her. I believe she is a narcisisst. I have been at odds with her my whole life. And other than that, she forgets alot. But she is pretty much with it. Any time we discuss this issue, it always ends with her getting angry and swearing that she is absolutely right. I, of course, will not agree with her. I don't know how to resolve this. And should I be thinking about her in terms of beginning stages of dementia?
on the other hand, if she hasn’t been diagnosed, maybe this is a red flag and you should look in to having her evaluated.
https://www.agingcare.com/questions/mom-in-al-is-once-again-telling-me-that-staff-have-stolen-things-from-her-444607.htm?orderby=recent
My mother hasn't yet accused me or my DH of stealing from her, but she does accuse others. When my turn comes, I think I'll just let the whole matter go in one ear and out the other. At some point, it becomes about OUR self-preservation and not jumping down the rabbit hole WITH them, you know?
Best of luck, dear Lady. This is not an easy road to navigate, that's for sure!