Claire just referred to her three-year-old sister as "a sniveling little bandit." I believe this tops her earlier (and nicer) word-related achievement, which was to describe a snail as being "a buttery pumpkin color."
She did clarify that "bandit" was an appropriate descriptor here because "first, Jane steals things; and second, she doesn't listen to you." When I what not listening had to do with being a bandit, Claire looked surprised and said, "Well, because bandits don't listen to the police."