Last Sunrise in Eterna

Three teenagers are invited to spend seven days on the secluded island floating off the coast of Puerto Rico to learn the magic of the elves.
All they have to do is give up their dreams.
Seventeen-year-old goth Sevim Burgos hates elves. Everyone else on earth loves the elves (especially their handsome princes) and would give anything to participate in Eterna's annual Exchange, where three teens can trade their dreams for a week of elven magic.
But Sevim knows things most people don't. She can see through the illusions the elves use to conceal their crimes. Ever since elves killed her father, Sevim has longed for revenge. So to help support her single mother, she has been selling abandoned elf corpses on the black market.
But it turns out that the elf prince Aro has noticed Sevim bodysnatching, so he kidnaps her mother in retaliation. To get her mother back, Sevim must participate in the Exchange.
In the home of the elves, Sevim will have to surrender her dreams and put her trust in the charming prince who took the last family member she has in order to master the art of elf magic. And in working with him, she will discover how the royal elves might be more tied to her own history than she ever suspected.