Sweet-blood by Pete Hautman

Lucy, known as Sweet-blood to the members of her favorite chat room, considers herself to be a modern-day teenage vampire. Once she was a relatively normal girl, but her struggles with self-identity led her down a much darker path. The allure and mystery of vampiric subculture quickly led her life into a downward spiral as her grades dropped and she grew less careful about controlling her diabetes. Reckless and uncaring, her new lifestyle threatens her very life. Can she recover from this destructive path or will her dangerous behavior lead her to tragedy? -Tanya J.