She is, rather annoyingly, rather too talented for that. However, here’s a decent explanation of why the gender pay gap does occur:
I’m not complaining about the time spent. That’s how I wanted to spend my time. Different people react to parenthood in different ways. Many of my closest friends, who love their children immeasurably and certainly as much as I love mine, need space from them. Quite apart from the financial imperative, they need for their own sanity to create separate professional achievements, maintain separate relationships or just have quiet days off.
That’s not how it’s been for me. To my surprise, it turned out that I find childcare infinitely interesting. It’s more rewarding than anything else I do and there’s no real peace or pleasure in being away from her. I’ve kept working a bit, but only to try and have some sort of skeleton career going for the future.
Don’t forget the gap is measured as an average. And it only requires some women to react to parenthood in this manner, more women than men do, for that gap to open up.