This may sound unsympathetic (and not terribly 'politically correct'!), but personally speaking, I think the 75% deal she's getting at the moment sounds pretty good. Presumably she wasn't forced into either a career in flying OR having a baby, and so the situation she finds herself in is entirely of her own making.
I have children (that I look after alone) and am but a mere PPL - but would have LOVED to have gained an ATPL in my 20's - and if I'd had the chance, doubt very much whether I would have then decided to start a familiy only a couple of years later. But if I had, then it would have been my choice - and so my 'problem' to deal with.
My comments may be a bit unpopular with some, but like the vast majority of working mothers, I don't expect the rules to be bent or adapted just to suit me - particularly if I have chosen to be in the situation I'm in!
GF