Time of Withering (Forgotten People, #5)

Syreen has found allies for her cause, but she still has to defeat her enemy's forces. She finds allies in places she'd never expected, learns about her true origin, and about a millennia-old enemy.

In addition to all the mess she yet has to clean up, she now has to worry about a force so terrible even her ancestors had fled from. But it will be her destiny to pick up the fight.