She's introduced in seventh grade where her and Karson have a pretty big rivalry. It starts in their shared science class where she puts her stuff (elbow, hair, etc) on his desk. He jabs her elbow one time with a pencil and she loses it. Their rivalry further proceeds when, near the last day of school for the seventh grade, Mayson gets in a fight with Karson over if he can wear his hat or not. She challenges Karson to a physical fight, but he decides to skip school the next day. Brett's also there and sticks up for him. In eighth grade, Karson talks to Mayson and they form a truce. They still don't talk much, but they're currently on good terms.