Isabella's horror finds vent in a tempest of wrath, only to be allayed by the resolve to leave a world where such monstrosities can go unpunished.—When Luzio brings her tidings of the fate of her own brother, her abhorrence of his misdemeanour passes swiftly to revolt against the baseness of the hypocritical State-holder who dares so cruelly to tax her brother's infinitely lesser fault, at least attainted with no treachery. Her violence unwittingly exhibits her to Luzio in the most seductive light; fired by sudden love, he implores her to leave the nunnery for ever and take his hand. She quickly brings him to his senses, yet decides, without a moment's wavering, to accept his escort to the State-holder in the House of Justice.