Below is just my household style, my 2 cents worth.
You have to see if she is hired mainly for the kids or housework? For my household, definitely to handle the kids then housework secondary.
She doesn’t have any schedule aparts from waking up to prepare the kid for school (6am) then she can go back to sleep after they leave and wake up (usually she wakes up at 9~11am) to do housework till the kids are back.
If we cannot wait for her to finish, then do it ourselves while she handle the kids. Else the other way round. My POV is give and take abit, always put yourself in her stand when planning. They are paid, but at the same time many employers forget they are just human and can only do this much. (My grandma for example) I’m thankful that mine is appreciative and won’t take this for granted, she’s been with us for 10 years 😊.