In 1997 she sang the title role in Stravinsky's "The Nightingale" conducted by Pierre Boulez and staged by Stanislas Nordey at the Théâtre du Châtelet. She returned to the Metropolitan Opera in September as Zerbinetta, and then returned to the Opéra de Lyon in Offenbach's "Orphée aux enfers". In 1998 she portrayed Olympia at the Met, and later in the year in Lyon, performed Tytania in Britten's "A Midsummer Night's Dream" and Aspasia in Mozart's "Mitridate, re di Ponto". In 1999 she took on the role of Amina in "La sonnambula" at the Lausanne Opera. She collaborated with William Christie in several projects: Carsen's new production of Handel's "Alcina", which premiered at the Palais Garnier and later staged at the Lyric Opera of Chicago, and Andrei Serban's new production of Rameau's "Les Indes galantes", which opened the new Paris Opera season.