La Monnaie
The next stage of her career included more performances of "L’attaque du moulin" in 1910, the creation of Tilli in "La Lépreuse" by Sylvio Lazzari (1912), and further performances at La Monnaie. During her career Delna performed at major houses such as La Monnaie, Covent Garden, La Scala, Teatro Lirico Milan, Metropolitan New York, Opera de Monte-Carlo and the Teatro Regio (Parma).