Some things that would help in my opinion as a mother: affordable and accessible day care including back up care, at least 12 months maternity leave, flexible work arrangements (time and place), PTO (imagine both parents only have 2 weeks to spend with their kids outside of weekends), extended school and camp programs, affordability of all.
I went back to work when babe was 4 months. I have only 2 weeks PTO, there inst even a Christmas shut down, I have no family in the area, the daycare centers around me have 1 year waiting lists and are over $2500/month. I am underpaid. My work is flexible thankfully.
I don't blame women who quit.