I am steadily and methodically informing my grandma that this is the reality now. She’s far from modern technology and I think she doesn’t fully believe it yet to act reasonably under pressure. But mass scamming like this (worldwide, all locales) is only few months away, maybe a year.
My plan is to create a set of code events from our past and to convince her to never trust “me” wrt finances, to always hang up and call my number and even then to leave an “incident” unresolved for at least one day.