A Touch of Chaos - Scarlett St. Clair

The gods are at war, the Titans have been released, and Hades and Persephone must fight tooth and nail for their happy ending. 

Persephone, Goddess of Spring, never guessed that a chance encounter with Hades, God of the Underworld, would change her life forever—but he did. Now embroiled in a fight for humanity and battles between the gods, Persephone and Hades have entered a world they never thought they would see. To end the chaos, Persephone must draw upon her darkness and embrace who she's become—goddess, wife, queen of the Underworld. 

Once, Persephone made bargains to save those she loves. Now, she will go to war for them.