In 2006, Stup published
Do-Si-Do with Autism, a children's book about an autistic turtle named Taylor. In 2008, she began publishing ''Sarah's Keepsake Collection'', a set of
gift books with themes that include life, love, family, and nature,
Do-Si-Do with Autism led to the development of the
Taylor the Turtle Fun Pack CD as an interactive component, In 2015, Stup published the novel
Paul and His Beast, for middle school-aged children, where Stup refers to autism as Paul's beast.
Kirkus Reviews writes, "Stup, who has autism and types to speak, presents an understandable child's-eye view of the condition, poignantly capturing both Paul's need and hate for the Beast. Her characterization is three-dimensional; for example, Paul's autism doesn't make him saintly, and popular kids aren't always jerks." ==Advocacy==