She possessed a remarkably beautiful voice, an excellent singing technique, and wide vocal range which enabled her to perform several roles traditionally associated with mezzo-sopranos in addition to contralto parts.
Shortly after Pelléas et Mélisande, Gerville-Réache got in a heated argument with the Opéra-Comique 's director, Albert Carré, and she left the company.
In 1903 she joined the roster at the Théâtre Royal de la Monnaie in Brussels where she appeared in five operas over the next two seasons.
[2] In 1907, Gerville-Réache travelled to the United States for the first time to sing with the Manhattan Opera Company in New York City, where she performed roles until 1910.
Up to this point, everything had indicated a spectacular continuation of her brilliant career and the music community lamented the loss of what several critics had deemed "one of the most beautiful voices of the century".