Kyleigh Leddy received her bachelor's degree from Boston College and her MSW from Columbia University in advanced clinical practice and public policy. In 2019, she won the New York Times "Modern Love" college essay contest for a piece she wrote about grieving her sister, Kait. Her work has appeared in various publications, including the New York Times, Parents, and The Cut. She is based in New York City, and The Perfect Other is her first book.