Being a mum and working as an airlines pilot seems pretty tough to me, hard enough to have a social life with no kid.
If her husband flies to....not much chance to take care of a kid. It's simply prettyy rough when both partens are working such demanding jobs
So the way I look at it the company should make an effort to facilitat a kid in that family (after all we do need kids).
Now, she wanted to work 50%? But BA only accepted 75% ? (if I understood it right) Here's a tought...make both parents work 75%. that leaves equally amount of time for the kid and that was the reason for her to work 50%....wasn't it?
If they don't like it then they aren't doing it for the kid, she simply wants more spare time...