Catherine Asaro - Spherical Harmonic (Saga of the Skolian Empire, #7) - Rocky_45

Separated for decades by circumstance and political machinations, the Ruby Dynasty, hereditary rulers of Skolia, struggle to bring together the tattered remnants of their family in the shadow of a disastrous interstellar war. Too many have died, others are presumed lost, yet Dyhianna, the Ruby Pharaoh, must move quickly if they are reassume their rightful place as rulers of the Skolian Empire.