After Mandryka accuses Arabella of infidelity and plans to go back to his land, Zdenka rushes in, no longer in disguise and in her negligee (making it clear that it was she who had the encounter with Matteo).
Efter at Mandryka har beskyldt Arabella for utroskab og planlægger at vende tilbage til sit land, styrter Zdenka ind, ikke i forklædning men i negligé (hvilket gør det klart, at det var hende, der var sammen med Matteo).