Don't Tell Mom the Babysitter's Dead (1991)

Continuity mistake: In the scene where Sue-Ellen has just come home from work, she places her pocketbook on the kitchen island. In the next scene the secretary is going through Sue-Ellen's office and finds her pocketbook and goes through it. How can that be if Sue-Ellen brought it home with her? (01:17:15 - 01:19:35)

Audio problem: When the drag queens are stealing the kids' car, Sue Ellen and Kenny look at each other and say "Liza," but Sue Ellen's lips mouth something different. (00:28:40)

Continuity mistake: When Sue Ellen shoots Gus with the water gun, the pattern changes between the closeup and the long shot. (01:23:35)

Walter Crandell: She doesn't look dead.
Zach Crandell: That's because it just happened. So you can't really tell, like on "MacGyver."

Bryan: I'd respect your privacy more if you weren't so secretive.
Sue Ellen "Swell" Crandell: Well I'd tell you more if you didn't want to know so much.

Kenny Crandell: Don't you ever go outside?
Walter Crandell: Nope, no TV, and no prizes.

Question: Who played Cynthia? Nowhere in the film credits or on-line is the character or the actress listed.