What are character traits does Catherine portray in Rules?

In "Rules" by Cynthia Lord, Catherine exhibits traits of empathy, responsibility, and resilience. She shows empathy through her efforts to understand and support her brother David, who has autism, as well as her desire to help her new friend, Kristi. Catherine is also responsible, taking on the role of caregiver while navigating her own emotions and friendships. Despite the challenges she faces, her resilience shines as she learns to advocate for herself and her brother.