Dayna was born on Earth but left as a baby with her father, Hal Mellanby after her mother, Karine Mellanby died supposedly in a Federation attack on their resistance group. This was about twenty years before her first appearance. When she first met Avon she described her education as having been by computer tutorial, but Hal somehow arranged for tutors to visit Sarran to advance Dayna's education, one of these being Justin whom she later visited on Bucol-2. Dayna's adopted sister Lauren, a Sarran by birth, was captured by Chel and subsequently found dead.