Rorra, Francisco’s sister, is the youngest child in the family. When she is four years old, she steals two of Francisco’s most precious pennies from his coin collection and uses them to buy gumballs. Francisco is furious at her, but Mamá helps him understand that Rorra is too young to understand how her actions hurt him and that people are always more important than money or things—in other words, his sister should mean more to him than his two pennies.