- Fiction:
- "The Girl on the Attic Stairs" (A historical fiction novel)
- Non-fiction:
- "The Secret History of the War on Cancer" (A book that examines the history of cancer treatment and research.)
- "We'll Be the Last Ones to Die: A True Story of Brain Injury, Redemption, and Love" (A memoir that tells the story of Seitz's son's brain injury and her journey through the challenges they faced together.)
- "One Step at a Time: Inspiring Stories of Recovery from Brain Injury" (A collection of stories from people who have successfully recovered from a brain injury.)
- "A Bird on a Wing" (A collection of essays about nature and the environment.)
- "The Story of My Life: A Memoir" (A personal memoir that reflects on her life and experiences as an author.)