Jilly my grandmother was a woman as you describe. Very well to do background, very well (university) educated in a science, then taken on by a massive company which, in those days, recruited bright young female graduates so their male employees could marry someone who "understood the importance of their job".
After marriage she found herself immediately out of work and very soon the bored stiff mother of 3 under two.
My grandfather had any number of expectations about a great cook, brilliant housekeeper, corporate wife, dinner parties, schmoozing etc.
My grandmother raised him a solemn two-fingered salute and wrote (bestselling) novels. They remained married but not happily. She did, however, lead the life she wanted to, despite being more "trapped" by her sahm status than most of us modern women are.
I suppose that is one reason why I'm not too worried about the sacrifices to my career sahming might cost me. I genuinely feel I can be here and do this and when the early years are over be elsewhere and doing something else. I think my gm was an excellent feminist too, despite her once-a-sahm status.