Ok, probably totally outing myself, but well.
I am old. 46 to be precise. I'm from the NE. My mum has always been my mum. Even when we moved down south, she was still mum.
Then my sister, a few years ago, decided to better herself, and tried to reduce her northern accent and sound posher. She then started to call our mum 'mother'. I think it sounds fucking stupid and pretentious. And she isn't 'mother' she's mum.
Anyway, my mum has since adopted it. And refers to herself as mother. I still think it sounds totally ridiculous. I hate it. When I get a card (or even an WhatsApp) from 'mother' it gives me the rage. firstly cos it just sounds so fucking pretentious and jumped up, secondly, cos she's been my mum for over 40 years, and now she's "MOTHER" (wtf) and thirdly I guess cos it feels like she's siding with my sister, or even worse, adopting her pretentious.
I have mentioned before that I don't like it, but she still does it.
So, do I try again, and if so, how, or do I put up with it until one of us snuffs it, and just feel fucking annoyed every time I have some communication with her?