Here are a few snippets to give you a taste of this fairy tale:
"According to Sophie's fairy indoctrination, time did funny things in fairyland. Emily could spend what felt like months here and return to the real world at the moment she left it, or she could spend what felt like minutes, only to return to the real world and find that a century had passed. Needless to say, she preferred the former option. It would be less detrimental to her career."
"If they'd told her they'd make her the greatest dancer ever in exchange for her sister, Sophie would never have agreed to the bargain. But she'd assumed she'd be the one to pay the price. ...She should have known. In all the stories, it was someone else who was taken as payment for a favor--a first-born child, a beloved daughter, a lover, a sister. ...Then again, there was always a loophole, a way to redeem the one who'd been taken or to sidestep the bargain entirely. She just had to find the loophole."
And then there's my favorite Fae, Eamon, who likes books and chocolate chip cookies:
"His silver hair gave him a shimmering halo. Although his face looked young, his eyes were ancient. They were the color of the mercury in old thermometers, a quicksilver color that shifted with light and motion. They were the most bewitching eyes she'd ever seen, and she felt as if she could have stared into them for hours--until she reminded herself that mercury was poisonous."