Jessi and the awful secret [eBook - NC Kids Digital Library] : Baby-sitters club series, book 61

Jessi discovers that one of the girls in her dance class is anorexic, and she and her friends soon learn about the seriousness of the illness. Only Jessi knows what's really wrong with one of the girls in her dance class. Jessi volunteers to help out in a ballet class for children. While helping, Jessi discovers a secret about Mary, one that could hurt her. Jessi has to decide if she should tell someone and risk losing a friendship