A bit of an aside, but a pertinent point I feel:
I suspect some (more recent) mums get hooked up on the baby's age, as if 3 months is far too young to let a baby out of your sight.
It's actually really easy to leave a 3 month old, providing of course their needs are met, they're fed, changed, warm enough etc. There is none of the separation anxiety that can occur if you start to leave your child at around 6-12 months.
As someone who returned to work years ago with a 3 month old, I had none of the tears and anxiety which some of my younger colleagues had from their children when they returned to work after year long ML. Physically, it was tough (I was bf so doing morning, evening and night feeds still as well as pumping) and I'm certainly not suggesting longer ML isnt a good thing- because I think women should have the choice.
And as I keep emphasising, Creasy would have had the option to pop in and out to feed her child at the on-site nursery - her job is vastly more flexible than most. This would have made it even easier than the reality for many women the world over who drop their baby off in the morning and are perhaps working miles away for the next 8 or 9 hours.
This was performative behaviour which does a disservice to women.