Alyst Blakely

 was wife to Terrin Blakely and the mother of Jenibeth, Sabel and Ollus Blakely. She and her husband committed suicide to keep the knowledge of the Cradle of the Gods safe from the Daleks upon instruction from their friend Hogoosta. They were later by the Cradle and Jenibeth's mind. (PROSE: The Dalek Generation)