This minor Puccini one-act, often overlooked, stole the show from the more famous I Pagliacci in a Florida Grand Opera double-header. It's difficult to make a bunch of identical nuns look compelling, but director Sandra Pocceschi asserted some cagey blocking to let us know who was whom, and as this brief tale of regret and injustice played out on FGO's stunning convent set — which featured a huge, weeping Virgin Mary looming like a monster, or a god — soprano Kelly Kaduce's voice pierced the auditorium like a big, blue laser and sold the opera as the masterpiece that few believe it to be.