After training as an illustrator Gabrielle worked as a graphic artist on videogames for PC, Playstation and XBox before becoming a senior lecturer in games development. Now a full-time author, her work includes Alfie Bloom – a series about a boy who inherits a castle and a whole load of magical problems, Knights and Bikes – a series based on the videogame of the same name, and Tiffany Aching's Guide to Being a Witch, an illustrated Discworld guide co-authored with Rhianna Pratchett.
Her latest series, Rani Reports, was co-created with her husband, Satish Shewhorak, and features a girl who wants to be an investigative journalist and her adventures with her rambunctious Mauritian nani.
Gabrielle currently lives in the North East of England with her husband and daughter.