A Legacy of the Light by Amy Reading (A Legacy of the Light #1)

This book comes hand signed 

From greed and dissent the darkness has risen. Taken from another, their power unbidden. For they shall not rest until they rule all. And in their victory, the realms shall fall.

Elsie Aitken believed she understood her world. But her grief-laden heart, and everything she thought she knew about her family, are about to be tested.

Thrust into the hidden realm of the Seelie—beings she only thought existed in folktales—Elsie discovers a world at war.

Corrupted magic, shadow-wielding rebels, and the threat of the human population being enslaved or eradicated, leaves the destiny of both worlds hanging in the balance. With no immediate way to return home, Elsie's fate becomes entwined with Elfayne's, and an unexpected bond with the Crown Prince leads to a far deeper connection to the mystical realm than she could ever imagine.

A Legacy of the Light is a romantic fantasy with suspense and adventure inspired by Scottish folklore.