An Italian American language instructor from Nashville, Tenn., Rita Richardson has embarked on a global campaign to restore a gorgeous baroque chapel in a small Tuscan town. “No one in the U.S. is going to care about your abandoned little church in Italy,” our priest told us. “I wouldn’t waste the time and effort.” Rather than heed Father’s discouraging counsel, I steadfastly set off on my mission: to save San Filippino, a stunning 17th-century baroque chapel in a little-known town in Tuscany. Castiglion Fiorentino is a long name for a small town perched on a hill between the Val di …