Rita Calabrese is the guardian angel of the bucolic Hudson Valley hamlet of Acorn Hollow-and of her lovable but exasperating "famiglia." She's always fortifying her down-on-their-luck neighbors with secret deliveries of home-grown vegetables and ravioli alla zucca, sneaking cannoli into her gruff husband's lunch, and meddling in (or, as she would say, "improving") the lives of her three grown children. But now, on the eve of her sixty-sixth birthday,...