Some of her most performed roles include ; Susanna ( Le nozze di Figaro ) , Despina ( Cosi fan tutte ) , The Queen of the Night ( The Magic Flute ) , Rosina ( Il barbiere di Siviglia ) , Adina ( L'elisir d'amore ) , Norina ( Don Pasquale ) , Lucia ( Lucia di Lammermoor ) , Gilda ( Rigoletto ) , Oscar ( Un ballo in maschera ) , Nanetta ( Falstaff ) , Olympia ( Les contes d'Hoffman ) , Sophie ( Der Rosenkavalier ) , Zerbinetta ( Ariadne auf Naxos ) , etc. Her roles at the Met included Susanna in Nozze di Figaro ; Despina in CosÃ fan tutte ; The Queen of the Night in The Magic Flute ; Amore in Gluck 's Orfeo ed Euridice ; Marzeline in Beethoven 's Fidelio ; Rosina in Il barbiere di Siviglia ; Adina in Elisir d'amore ; Norina in Don Pasquale ; Oscar in Ballo in maschera ; Nanetta in Falstaff ; Olympia in Les contes d'Hoffmann ; Sophie in Der Rosenkavalier ; Zerbinetta in Ariadne auf Naxos ; and Adele in Die Fledermaus . She later added lyric-coloratura roles such as Amina in La Sonnambula , Lucia in Lucia di Lammermoor and Gilda in Rigoletto , the last being her farewell role at the Met in 1985 .