Writer of fiction for children, young adults, and adults who is best known for her Rebel Angels series. She also writes crime fiction, including Crossing The Line, The Opposite of Amber, and the dystopian novel, Bad Faith. Before she became a full-time writer, she was a hotel chambermaid, a typesetter, a theatre usherette, a barmaid, a radio presenter, a hotel wrangler, a sales rep, and a singer in a Celtic-Caribbean band in Barbados.