Song of Forever. Rebels of Olympus, #7

What would you be willing to sacrifice to cheat death? In the House of Hades, young Princess Macaria struggles to belong. Not stern like her father, King of the Underworld and ruler of the dead, nor power-hungry like her mother Persephone, she turns to stories of love and loss among the mortals to seek solace in a world without happy endings. After the queen assigns Macaria more responsibilities in the ruling of the Netherworld, the young goddess learns that justice is swift but seldom fair, especially when it means preserving the division between the worlds of the dead and of the living. When the mortal Orpheus, who plays the lyre with heavenly grace, breaches the Underworld to retrieve his wife, he threatens the very balance of life and death.
With Orpheus' destiny in her hands, Macaria is torn between her admiration for humans and her duty as the princess of the Underworld. Will she choose what history and duty say is necessary-or follow her heart?