Trivia: In the first scene of Burt and Vicky in the car there is a copy of Stephen King's 'Night Shift' on the dashboard of the passenger side. A little homage to King in that the short story 'Children of the Corn' is in this book.
Trivia: John Franklin, who plays the villainous Isaac, was actually a full-grown man in his mid-20s. He had a growth hormone deficiency when he was growing up, and as a result, he never grew taller than 5' and had a slightly lighter voice. This made him perfect for the role as he looked and sounded the part, and also didn't have to deal with the restrictions that come with child labour laws.
Chosen answer: Who knows? Maybe they blackmailed her, because she works there, and the children wouldn't get caught poisoning the coffee, or maybe she isn't as old as you think, she could well be in her mid 20's, it's hard to tell, you only see her briefly.
Hamster ★
She is obviously in her late teens, early 20s.