Lord of the Underworld by Skyler Andra — book slip

Hades messed up. It's his fault the Lady of the Underworld left...again. The Lord of the Dead can't mope about the Underworld while breaches allow souls to escape and threaten the living. Something is wrong, and Hades needs Autumn’s help to fix it.

Slight problem: Autumn no longer wants anything to do with gods, and hightailed it to Fiji, to grow tropical flowers and eat pineapple and coconuts all day. Saving the Underworld requires her to dive into her death goddess powers; a part of her she wishes left behind. Where life and death collide, there can only be one winner.