Alexandra Villoch, the slender and well-dressed publisher of The Miami Herald, was quick to make one thing clear as she addressed The Harbinger staff recently, “I am not a journalist, but I run The Miami Herald.” And it is true, she never worked as a journalist. Earning a degree in business by the age of 21, Villoch has always been a standout and, while her manicured hands don’t show it, it was a grueling and long...