Demon Magic

She kissed an angel. And a half demon. The explosive conclusion in The Mage's Daughter Trilogy.
 
But Ines Salgado has no time for boy problems when she is the leader of a motley crew of renegade mages, angels, demons, and mortal soldiers, all fighting on the same side to save the world. 

Book 3 in the action-packed The Mage's Daughter Trilogy.
Book 1: Blood Magic
Book 2: Angel Magic
Book 3: Demon Magic