I Don't Remember Mama - S1-E22
Other mistake: Towards the end of the show, Fran has a tape of the Sheffield's which she removes from the cover and inserts into the player, upside down. It's quick but it's there. (00:21:30)
I Don't Remember Mama - S1-E22
Continuity mistake: The tape reel case that Fran is writing on changes between shots.
Answer: Mr. Sheffield needed someone to manage the kids, not necessarily babysit them. Brighton was a Bart Simpson type, Maggie was shy and awkward and Gracie had personality issues.