In the novel, she is described as seven or eight years old, relatively outgoing, blonde and "a sporty young girl who loves baseball". She wears a baseball glove slung over her shoulder and a baseball cap just about everywhere. Lex is shown to have the traits of a stereotypical child that often complains. Her behavior often annoys the people around her and puts her and the group in danger. Throughout the novel, she shows characteristics of Hammond, such as being careless and unappreciative of the events occurring around her, though not evil.