DM hasn't 'worked hard all her life'. I've already been working more years than she has. Graduated with debt/had to work through it to support myself. She abandoned her 2 children to go off and study, never came back for us. Took early retirement after working for 20 years. Final salary pension, so very generous.
Bought her council house cheap (3 bedrooms 'for when her DCs came to stay'
), sold it for a huge profit, bought another house, sold it for a huge profit then downsized to a 1 bedroom new build when she had grandchildren so no 'free childcare' there!
She now spends her retirement online shopping, going on holidays, making use of her free travel card for daytrips with her other similarly fit/wealthy friends.
She's having a great time. I work full time, she criticises me for not getting someone in to do jobs round the house/not being able to visit more often. She's never even had the experience of being a working mum, as she left us in order to start a career. I am, at times, resentful (but then, I do have 2 wonderful children who love me lots, so maybe not!).