The Wonder by Emma Donoghue. The book is being released by Little, Brown and Company on September 20, 2016.
Amazon says this about the book: In Emma Donoghue's latest masterpiece, an English nurse brought to a small Irish village to observe what appears to be a miracle-a girl said to have survived without food for months-soon finds herself fighting to save the child's life.
Tourists flock to the cabin of eleven-year-old Anna O'Donnell, who believes herself to be living off manna from heaven, and a journalist is sent to cover the sensation. Lib Wright, a veteran of Florence Nightingale's Crimean campaign, is hired to keep watch over the girl.
Written with all the propulsive tension that made Room a huge bestseller, THE WONDER works beautifully on many levels--a tale of two strangers who transform each other's lives, a powerful psychological thriller, and a story of love pitted against evil.