I was a single mum for 15 years and met my partner when my daughter was 19, we've been together for 6 years. I have an older son too.
My daughter and I have had a volatile relationship in the past but for the last three to four years everything has been sweet between us and I've supported her enormously (especially financially) at great cost to myself and my partner. She can be very manipulative but also insightful, funny, loving and I love and adore her (and my son).
At first she was not keen on my partner (I guess she was used to me being on my own so the adjustment was hard) but grew to like him. He has done so much for her over the years, more than her father ever did, and will run to sort out any problem at the drop of a hat, lend her money etc. however he has been cross at the way both children disrespect me over the years.
She asked me for money yesterday and I refused, saying I was short of money myself when I got an all out attack via text. How I was failing myself and both children for not choosing a man who was financially solvent and should be living in a large detached house (with bedrooms for them all I suppose?) and how I should be winding down instead of still working in my mid-50's. She was so nasty and hurtful and asked me what the f*ck I thought I was doing with my partner who came from a very poor background but works incredibly hard to provide for us, and we are working our way out of debt and into a good position, but with Covid and the loss of our clothing business due to Covid it's been hard and he has had to retrain himself.
What makes someone go from being charming and loving to a nasty person I barely recognise? How do I deal with the hurt she is causing? Even if we follow the usual cycle of her apologising she has put those hurtful words and comments out there now and can't undo them. She would never say such hurtful things to my partner directly, they are always directed at me, so he is clueless at how she is behind his back and I'm too ashamed to ever tell him, he would be so sad to know she attacks his background and personality behind his back.
I've been there for her every step of the way and supported her through a recent career change and it's so upsetting to have her turn on me and especially my partner who is loving and kind and has in turn stuck with me and the difficulties I have had both career-wise and looking after elderly parents. AIBU to put my partner first as she seems to see it as a competition? She's even told me that I should leave all my money (what money!!) to both children not to my partner as 'that's what parents should do for their children'.