The document is an excerpt from the book "Wintergirls" by Laurie Halse Anderson. It follows two best friends, Lia and Cassie, as they develop eating disorders together and make a pact to be the skinniest. Cassie is eventually found dead alone in a motel room. The excerpt shows Lia spiraling further into her eating disorder as she cuts herself, struggles with intrusive thoughts of food and weight goals, and feels guilt over Cassie's death.