Kind of a Big Deal by Shannon Hale
Josie Pie was born to be a star. So she dropped out of high school to pursue her Broadway dreams, but after months of failed auditions, she finds herself broke, beaten-down . . . and nannying in Missoula, Montana. Lonely and directionless, Josie checks out the local bookstore, looking for the ultimate escape.
And escape she does. Literally. She falls into the plots of her books, including a bodice ripper, a dystopian thriller, a YA romance, and more, all filled with swoony co-stars who just make her yearn to repair things with the boyfriend she left behind in NYC. As her reality begins to unravel, what starts as a welcome break from her lackluster life soon begins to feel like a stifling nightmare—but is it too late for Josie to get back to the real world?