Cheval Bayard by Artemis Greenleaf

If Sarah Reeves was a faery instead of a human, it would be a whole lot easier for her to get what she wants: to ride Cheval Bayard in an elite competition; to earn a spot on the Mundane Intervention Team; and for Brendan Greenwood to like her. But Regan, her archrival at the stables is doing everything she can to steal Cheval Bayard out from under Sarah. There are more students than spaces for the Mundane Intervention Team, and competition is fierce. And Brendan inexplicably likes mean-girl Dahlia. It’s enough to make Sarah wonder if she should leave the realm of Faerie and return to the Mundane world, where she might feel like less of a freak. After all, she seems to be the one person who is painfully ordinary in a place where everyone and everything is magic. But when she and her friends stumble upon a terrifying conspiracy, her humanity may be the only thing that can save both worlds.