Yes, why doesn't LW say to parent of kid #2, "Hey, your daughter keeps taking the money you give her for lunch to go to the toy store and sticking us with the lunch bill, so we're not going to take her with us anymore"? I can understand LW being too taken aback the first time, but the second time, they needed to put their foot down, if not in the moment then when they next saw the parent. (Reading that description has me so angry that I'd have no problem using my mom voice on that kid if I were a stranger who'd witnessed the whole interaction.)