Soul of Ice by Savannah G. Matthews

After a fragile accord between the dragons and the kingdom of Thesia ends in a massacre, fae princess Surina Fairlight pays the price. A fire dragon seeking vengeance infiltrates her home and brands her with the mark of the dragon kingdom. Kept within the walls of the palace for her own protection, twenty-year-old Surina can only dream of a world outside of the White Keep. To make matters worse, she was born with control over all elemental affinities. A blessing from the divines, she was told, but as she nears her transition into immortality, haunted dreams and whispers say otherwise.
The arrival of a foreign royal family marks the start of an unusual string of murders in the palace. With the rise of this mysterious evil, Surina lands right into the sights of Thesia’s bloodthirsty night-dwelling court, and the ice-cold king who rules it. Try as she does to resist the king’s dark obsession, Surina falls hopelessly into his web, where she uncovers his twisted secrets just a little too late.
A magical miracle, brought on by the whispers in her head, leads to an attempt on Surina’s life, forcing her to flee the palace. Far from home, she learns the truth of her father’s death. The resurfaced past places her in the center of a chilling love, a masked fate, and the infernal beast who marked her for life. Now, Surina has to make a choice. She can remain in the human realm and be hunted for an eternity or leave everyone behind to escape beyond the wards of the faerie realms.