Sanctuary with Kings by Kathryn Moon

Evanthia has spent half her life trapped inside the Seven Veils. When the house crumbles, she seizes her moment and runs from Birsha and his twisted pleasures. But pleasure is what she needs to survive, and the dark streets of London leave her starving and vulnerable.
Rescued by a mysterious monster who vows her sanctuary, Evanthia must piece back together the woman that Birsha tore apart. Quiet sanctuary is no cure for her endless hunger, but the war brewing on the horizon is the last place she wants to be. Hiding with sleeping dragons and lonely monsters in a castle made from dreams might be a fantasy, but it’s not enough to keep the nightmares at bay.
When not even Evanthia’s tired heart can remain dormant in the tender care of the kings who keep her safe, she must make the decision. Hide from her past forever, or face the man she fears most on the battlefield.