The Thin woman is a combination of poems, song lyrics, photos, and journal entries illustrating one woman's constant and courageous struggle with her lifelong eating disorder. The poems and song lyrics, written by her sister, attempt to capture the Thin Woman's reality and the devastating pain it's caused both herself and her family. The poems are coupled with black and white photographs of the Thin Woman to illustrate this disease for the reader. Throughout the book, readers are taken on a complicated journey as they read the Thin Woman's letters to Bob (the name she's given to her eating disorder). Within these letters, the Thin Woman thanks Bob for being her dearest friend. Together they share the triumphs as she loses weight to keep herself small and safe. They battle as the Thin Woman realizes what Bob has cost her and she fights to rid herself of his control.