I'm glad you are taking steps to set boundaries. Wow, so she starts the crying and shouting but then calls you the drama queen?!? I think she will see the real drama queen in the situation if she looks in the mirror.

My mother received a dementia diagnosis about 4-5 years ago and she is one of those cases where it magnified her less desirable personality traits. After various family Zoom calls where she was constantly hostile towards me, I have bowed out. My husband doesn't speak English and even he could feel the nastiness emanating over the internet.

In this country we have this saying "madre, hay una sola". Literally, it's like you only have one mother, but it is more used to indicate you are stuck with the mother you have, you don't get a choice.