Unbirthday by Liz Braswell

From Random House/Disney: 

Liz Braswell spent her childhood reading fairy tales and going on adventures with her cat in the forest. She majored in Egyptology at Brown University (and, yes, she can write your name in hieroglyphs). After spending the next ten years producing video games, Liz began her career as a full-time writer with a retelling of “Snow White” called Snow, followed by Rx and the Nine Lives of Chloe King series. She is also the author of Stuffed, Stuffed 2: Into Darkness, and many Twisted Tales, including A Whole New World, Once Upon a Dream, As Old as Time, Part of Your World, Straight On Till Morning, Unbirthday, What Once Was Mine, and Adventure Is Out There! The New York Times best-selling author lives in Brooklyn with a husband, two children, a cat, and several coffee trees—one of which has already produced a rather tolerable espresso.