"the mother in Mary Poppins" - I believe she was a suffrage activist, from what I could gather. I skipped the movie for my kids because I didn't like the witchcraft action of Mary Poppin, but I recall thinking that the mother was in all likelyhood an upper-middle class trouble-maker....you know, send the poor women into combat, but the rich ones will still be able to get out of being on the front lines...
Bingo - she was a suffragette. Our son must have watched that video a hundred times.
Anyway, 'women who do lunch' have been part of the landscape for eons. What's really a pity is to see a young hottie that has all the makings of pulling it off (say with a doctor, lawyer, etc), but who instead parties away their young 20s (gotta sell high) and ends up missing the cut.