Dear Idlovetoknow,
I read your replies as far as I could (I'm short of time - sorry).
I'm a widow, pensioner on a much lower... err.. that's MUCH lower income than your mother. I mean the sort that makes me choose between food and heat sometimes and not having central heating. I am disabled and had to stop working through disability. I have trouble with the daily expenses. But I usually just about scrape by. I am very well educated and held a good position in a job requiring high qualifications but the car accident obliterated my career. I never go out except for medical appointments. No car, no holidays. Your mother might do well to think of people like me, and there are many worse off than I.
I think money is as much an attitude as a reality. Some people my age are simply frightened, I often am, by the cost of living these days. They may be unrealistic about what they can afford. The price of heating has terrified many of us.
I think your mother is emotionally blackmailing you. I'll be blunt - sorry - she sounds very spoilt, with her many first class holidays: It must upset you but I saw this in a different light when you said;
"She broke down sobbing in a car dealership because she couldn’t have both a £600 a month car and 5 holidays a year (btw these holidays are 2 weeks at a time and she’d never lower herself to stay in anything less than 5 stars… maybe a 4+ boutique hotel maybe, she’d treat herself to 1st class here and there too)" and two houses and, sorry, 5 bedrooms is a big house, and a new car every 3 years, sobbing in the show-room because she wants the top model - that alone speaks of a very manipulative person to me. As for her grudge that she 'only' gets half of her late husband's pension, well, when he was alive, did he not need some of it, and does she not have earning capacity of her own? She sounds terribly selfish and terribly 'entitled'.
I'm so sorry, Idlovetoknow, I think your mother's 'money problems' do not exist at all but that she has a personality problem and is burdening you with her monetary worries because she can get your attention and because she actually believes she is entitled to a life of luxury with a high income. I feel extremely sorry for you to have to go through her kind of phone calls and her unreasonable complaints about her finances and what she wants. You have your own children and she should be supporting you - not financially although she could if she tried, but emotionally. But she is someone who only thinks of herself. Her world revolves around herself and she thinks she somehow has the right to have everything she wants; she believe she needs only the most luxurious life with the most expensive lifestyle money can buy. I expect your father found this very hard. Now he has passed, she is using you as her emotional battering ram.
Try and keep a distance between her whining about money and your feelings. It is a manipulative, selfish, attention-seeking device. Just stay neutral. Say obvious things like, 'Well you are not starving, you are managing well. If necessary you could cut back on some spending. Maybe get a cheaper car." Remain cool and calm. Just sound neutral and friendly but unemotional. It's not your problem and do not expect her to change. I'm afraid she is too old for this.
Above all, take care of yourself, your own family and enjoy your life with them. Lots of love, Elle. 💐