Do people like this still really exist?
Well clearly they do @hellosally because you are writing about them!
There are lots of women from all social classes whose sole aim is to get married, or find a partner, and not put a lot of effort into their education or a career. No offence, but there are many women working in low-paid jobs, who have no career prospects and who simply want a man to enable them to have a house and a family.
In the 'old days' these women 'came out' as debutantes, went to finishing school, or took fairly low-key jobs like being a nanny, but their intention was to mix with the right pool of eligible men.
One of my ex-s had a sister who was one of the last lot of 'debs'. Both he and she went to top public schools and she was unusual in carving out a very successful career for herself. It wasn't the way at the time.
There are still some women like that today.
Pippa has a degree in English although her writing career has never taken off - her Waitrose columns were dire, and she only got that through who she was. I think she was fairly desperate to marry by her early 30s, after a few failed relationships, and I am still a bit surprised at her choice.