Katherine's writing career began while she was working as a marine biologist in the Caribbean and Caicos Islands. To address the need for simple educational tools in regional communities, she began writing and illustrating grant-funded booklets and posters about the environment and local fisheries. This proved to be such a satisfying experience that Katherine branched into writing and illustrating children's books about nature. She has authored and illustrated more than a dozen books, mostly for children. She has also contributed articles to professional scientific journals and popular magazines. Her commissioned artworks include a hotel mural, logos, posters, portraits, scientific drawings, cartoons, and cookbook illustrations.