Angels on the Roof — Martha Moore

Fourteen-year-old Shelby cannot understand why her mother, Zoe, is constantly packing them up and moving. Now that they've lived in the city for a year and Shelby even has a best friend, she's determined to stay put. She's tired of being at the mercy of her mother's strange moods and sudden whims. And she's tired of Zoe's evasions, especially on the subject of Shelby's father. When Shelby finds some concrete evidence of his existence--old photographs with a man's head carefully cut out--she determines to confront her mother. But before she has the chance, Zoe announces that they're taking a trip to Red Valley, where she used to live. Shelby hopes she can find some answers there and leave quickly. But Red Valley turns out to have a strange hold on Zoe, and Shelby discovers that some questions might be better left alone.