In 2001 Forrest contributed to an anthology on the writer J.D. Salinger titled Love & Squalor, with an essay describing Salinger's influence on some current young writers. In 2007 she co-wrote and edited her first non-fiction book, Damage Control – Women on the Therapists, Beauticians, and Trainers Who Navigate Their Bodies, which was an anthology of essays of the emotional pain women suffer for their own physical wellbeing. The book features contributions from many well-known women, including Helen Oyeyemi, Marian Keyes and Sarah Jones.