Dragons of Vkani by Aurora Springer

When Sa Kamizan Veedak and Dr. Lucy Stannis receive a distress call from his sister, they undertake a dangerous mission to save her from the war-torn planet of Vkani. The exiled Atrapako risk death if they are discovered. They contend with treachery and a hostile environment in the attempt to locate and rescue their lost families. When Sa Kamizan is captured during the search, Lucy musters all her skills and resourceful allies to retrieve her mate from a fate worse than death.