Flames Of Desire by M. D. Deer

The Ancients of the 20th Century, with their Ten Days’ War, had left the western country a bleak, radioactive desolation through which the Princess Yolande had led her hill people for years, in search of the fabled Tri-Cities of the Imperials.

The Princess dared not lose herself in the arms of any man lest she lose her power over him at the same time. But her servant-girls were lush and lovely, eager and willing, so that the lack of men to love was not a critical problem.