Inoffensive middle-grade fiction about 11-year-old Libby coping with changes in her houseshold. Libby's grandmother, who has taken care of her since she was two, wins the Massachusetts State Lottery and moves to Florida, leaving Libby to adjust to being the sometimes inconvenient only child of two working parents. In addition to changes at home, Libby deals With her first crash, a malicious classmate, and a too-small allowance. A money-making scheme gives the malicious classmate a chance to turn Libby in for cheating, and then frame her for theft. The real culprit is exposed through the use of invisible chemicals and ultraviolet light. With one-dimensional characters in artificial situations, the final result is a story in which problems are too simply resolved and loose ends too neatly tied up.