Deerna was the female lover of Rodno at the time of Darth Vader attempt to conquer Kadril in 1 ABY.
Deerna was a Kadrillian who, apart from her people, lived apart from the other Kadrillians. Deerna was made by Rodno, a young scientist. But Deerna strongly doubted Rodno's abilities, even though he had given up the more natural way of life as non-Nociv.
During a last attack by Father with the Pacifog, Rodno saved Deerna's life as he became injured.
Meanwhile, Leia, Del Quirz and Chewbacca discovered that Rodno's proved to be a great success and even protected from the Pacifog of Father. Rodno recovered from his injuries, and Deerna found him a worthwhile partner.