Crystal Mask by Anna Santos

Left to die in a dangerous forest by her stepmother, Cindy survives with the help of an older woman, known as Godmother, and finds a new family with a werewolf pack.

She lives a happy life until she discovers the king of her birthplace is looking for her. Cindy attends a masked ball to find out what’s going on, which shouldn’t be a problem when her godmother knows fairies who can dress her like a princess and hide her identity behind a magical crystal mask that shouldn’t be removed.

There’s just one problem: during her younger years, the prince of the Shattered Bones Island didn’t lose a chance to make fun of her. Now, she must seduce him to find out why his royal family is looking for her. That is, if she can find him in a ball with more handsome princes than she can handle.

When Prince Solveig insists on taking Cindy back home and removes her mask, Cindy needs to run for her life. Only her friends can get her safely to the Fairy Island where the queen reveals a shocking truth—Cindy has fairy blood, and she’s going to turn into a fairy after her twenty-first birthday.

However, when Cindy finally wakes up from her transformation, her world comes crumbling down. Someone dear to her is dead, and the Dark King has been released. Racing against time, she needs to save her friends from the deadly elf.
With her newfound powers, will Cindy be able to protect everybody she loves, especially the one she doesn’t want to forget?

In a land where supernatural creatures live peacefully with humans, not everything is what it seems, and some chosen ones are fated to live extraordinary lives and all-consuming love.