A Corner Of The Universe by Ann M. Martin

Set in the summer of 1960, the story follows a young girl named Hattie Owen as she navigates the complexities of family secrets and personal growth. Her world is turned upside down when her uncle Adam, who has mental disabilities, comes to stay with her family. Through her interactions with Adam, Hattie learns about acceptance, empathy, and the challenges of fitting into societal norms. The narrative beautifully captures the innocence of childhood and the profound impact of unexpected relationships, ultimately leading Hattie to a deeper understanding of herself and those around her.