"Pietro!" a voice called faintly from somewhere above them and a few moments later a young woman dressed in a red silk gown descended the stairs from a deck above and paused at the sight of Pietro and the stranger. "Darling, father wants us to get ready for dinner," she told her brother, eying the girl beside him with something like a suspicious curiosity. She made no move away from the stairwell, just beckoned for her brother to follow her.