I made the opposite choice. I left a 7 figure a year (but 70% travel) job to take a few years off with my kids. I'm under no illusion that my kids will be that much better for it, but I will be.
I am consuming this time with just absolute relish. A relationship is the sum of small things. And driving them to school is part of that overall cumulative time that ... just... matters. For me. I'm sure the kids would be great if their mom did it without me. But I only have one shot here, only a few years where the kids are 12 years old. So yeah, I'll spend my 7 figures a year for this. (Bezos test: would I make the same choice on my death bed looking back?)
She is in a unique situation in that she could choose to live any way she wants; she's not some working stiff. And she is choosing something else. It's not going to hurt her kids, but I think it's a tradeoff she may regret later.