How does she manage it? When does she go to work and when does she come home and is anyone with the kids from when school gets out at 2 until 5 or 6? Are they home alone or do they have after school care?
Big issue in my house is my wife barely trusts me to take care of the kids, much less a 3rd person. And I hate to leave them home alone for every afternoon, even if they are old enought to handle it.