Damia is a 1991 science fiction novel by Anne McCaffrey; it is the sequel to The Rowan, and the second book of the Tower and Hive series.
Damia is told mainly from the point of view of Afra Lyon, the Rowan's assistant, a character first introduced in the previous book. It begins with his childhood on the strictly regimented colony planet orbiting Capella. It then shows Lyon's view of the events of The Rowan, followed by his helping to raise Rowan and Jeff Raven's children, especially the precocious and powerful Damia. Lyon later realizes that he has fallen in love with his young ward, which gives him rather conflicted feelings. In the end, the two wind up defending humanity against an even more dangerous alien enemy than the Hive faced by the Rowan.
The Talents Universe series listing at the Internet Speculative Fiction Database