Her upcoming book, tentatively called "Breakout," focuses on three girls coping with a prison escape in their small town. Messner has enlisted multiple sensitivity readers to help her work out the class and race issues affecting the town and her characters. A reader has called out when her language doesn't ring true, and has questioned when her character does something that seems inauthentic and provides her perspective on why that is. Messner said it's been encouraging to hear when she's gotten something correct, but also she's had to make adjustments.