Just had a catch up. Friggin hilarious. I should take time to read more often. My Gran is also 'semi-detached' I know the repetitive conversation thing down to a tee. I visit every weekend and every time I get 'Oh, aren't you lucky got a day off again'. She's in bed by the time I get home from work, definitely a positive thing. Grandad and I snigger every time I give a different answer to the same question. Gd gets a dirty look for his efforts.
I've started chuntering under my breath. Maybe I should try the different answer each time approach instead!
Different answers each time will probably make you feel better & it won't make any difference to your mum!
I've answered the same question the same way for a hundred times and then tried answering differently, and it became a game of how clever and creative I can be. Sometimes the crazy answers draw looks of "you are definitely crazy". Once she asked what I had been drinking. LOL