Danielle Ganek, who, with her husband, the hedge fund operator David Ganek, now owns the 740 Park apartment where Black Jack and Janet Lee Bouvier raised their children, the future Jacqueline Kennedy Onassis and Lee Radziwill, joins the ranks of published authors in the building, which includes such illustrious names as Bette Bao Lord. Ganek just published a novel about the contemporary art world, Lulu Meets God and Doubts Him (Viking, $23.95). USA Today visits her in her apartment today.