Donnelly worked with Disney again in 2017, when she published "Beauty and the Beast: Lost in a Book", an original story to accompany the blockbuster Beauty and the Beast film. Lost in a Book expands on the classic tale, exploring the growing friendship between Belle and the Beast as well as Belle's ordeal within the pages of Nevermore, a magical book from which she narrowly escapes. Lost in a Book spent four months on the New York Times bestseller list, and rights have been sold in 11 countries.