|“||Laura, I don't hate you 'cause you're fat. You're fat because I hate you.||”|
The reason why she's in a wheelchair hasn't been revealed. She appears to be a good friend of the 'Shortest Girl', as they are almost always seen together.
Jessica doesn't play a major part in the movie's plot. She makes her first appearance in the cafeteria next to her best friend, Shortest Girl, where the two stated that Regina once met John Stamos on the plane, and he told her that she's pretty.
Later into the movie, Jessica got into a fight with the 'Shortest Girl' over the pages in Burn Book, but soon-after they are seen together once again, so they presumably recovered their friendship.