My friend is in this situation.
The children's mum is a keyworker, their Dad (her husband) is not but works outside of the home in an industry still open and cannot work from home.
She is at home WFH 3 days a week.
The kids are in school on a KW place.
I personally think that's entirely right as neither parent is available. But it seems lots on here would think that wrong and that she should be looking after them instead.
What's your opinion?