Megan Bennett writes: “When Idina Menzel was contemplating writing a children’s book, her first thought was to join forces with her younger sister, Cara Mentzel. The duo debuted with the book Loud Mouse, and its sequel, Proud Mouse, comes out this September. Both follow a pair of mouse sisters, Dee and Cara Lee, who support each other in their journeys of being their most authentic selves. The sisters spoke with American Libraries about their series, what they hope young readers take away from it, and their own memories of libraries.