Heart of Thorns by Nicolette Andrews

She pretended she could not see them. They told her the fae weren’t real. Then they cut out a woman’s heart and she could no longer look away.
Catherine’s first memories were of the fae. They visited her in her garden, and she offered them saucers of cream and honey. But they repaid her in tricks and misfortune. They broke vases and locked her in trunks. Her parents didn’t believe her–no one did–and so all her life she took the blame for their mischief. When Catherine arrives at her new home in the village of Thornwood, she’s determined to put her past behind her and live a normal life. That is, until a girl is found with her heart cut out… murdered by one of the fae.
Catherine has spent a lifetime looking the other way. She convinced herself she was mad and that the fae were not real. But a chance meeting with the handsome gardener, Ray Thorn, throws everything into question. She can no longer ignore the truth, because the killer is after women who can see the fae, and Catherine might be their next victim.
With the killer still on the loose, Catherine and Ray race to uncover more about her power and the dark secrets Thornwood hides. But time is running out and to find the killer, Ray brings her into his world, the mesmerizing and deadly faery. She should know better than to trust one of the fae, and making a deal with him could jeopardize everything she’s worked for, but if she doesn’t… she’ll be the next to lose her heart.