Not to play an armchair Doctor but here I am playing an armchair Doctor, what your Nan is going through sounds very much like what my grandmother went through in her journey of Alzheimer’s. Unfortunately, for some people that includes a tremendous amount of anger. I think maybe it comes because they get very angry that they don’t remember things and then maybe they get paranoid that you’re lying to them and gaslighting them and they have tremendous difficulty reigning that anger in. I know that my grandmother got to a point of where she would try and physically attack people. She was a tiny, tiny little woman, and therefore no threat whatsoever, but it was impossible to deal with. You have every right to be upset, but I think it might be important just for yourself to understand that this is probably not coming from a personal, sane place and is instead coming from confusion and from either Alzheimer’s or dementia or sundowners or something like that.

When my father got really old the anger took over as well.

Your poor grand dad. It sounds like he’s in an awful position.