She retired from the stage after she married Baron Leopold Julian Kronenberg, yet she stayed in the arena as a voice teacher.

[2] Emilja was an amateur soprano who had studied under Manuel García II and Pauline Viardot, his sister.

In Warsaw, she performed the role of Desdemona in William Shakespeare's Otello by Gioachino Rossini at an event for the Benevolent Society at the Grand Theatre.

[3] The Reszkes built and operated the Hotel Saski, which catered to artists from Moscow, Berlin, and Paris, adjoined their residence.

[6] Josephine, a soprano, and her younger brother Édouard de Reszke performed in Western Europe beginning in the 1870s.

[10] She remained at the Opéra in Paris, France for several years,[1][6] during which time she became known for her performances in Italian and French operas; she also created the role of Sita in Jules Massenet's Le roi de Lahore.

[1][6] She was a success in Madrid, Spain in Les Huguenots, L'Africaine, La favorite, and Don Giovanni.

[1] Reszke debuted in England on 18 April 1881 at Covent Garden where she played the title role in Aida and her brother Édouard was also a performer.

[6] Reszke appeared with her brother Jean on the occasion of his debut; the two, along with Edouard, participated in the Paris premiere of Hérodiade in 1884.