It's always wild when management assumes there's grandparents (your or her parents), that you still have a relationship with, that they live nearby, that they don't work, that they're capable of watching your children, and that they can do this at the drop of a hat. (My wife hasn't had parents since she was a teenager.)
I'm going to toe the Cave line here and point out that it becomes a serious problem when people "in charge" have that mindset and think that's still how childcare works. Because that's how it was for them or they never had to think about it - largely cobbled together and organized behind the scenes by women.
They then have no motivation or see the reason to view stable, quality childcare as a vital part of the workforce infrastructure. Another reason to have people from all walks and stages of life in our political leadership. *Steps off soapbox*