Her father, opera singer Pavel Koshetz (Ukrainian: Павло Олексійович Кошиць; 1863 - 2 March 1904), committed suicide in 1904, when Nina was 12 years old.

Known for her overly-extravagant life style, her vocal powers declined in the 1930s and in 1940 she retired to Hollywood where she made a living as a voice teacher and restaurateur (a venture that ended in bankruptcy in 1942).

CD released 1993 (Opal/Pavilion Records, 9855) Songs and arias by Borodin, Rimsky-Korsakov, Ravel, Ponce, Martini, Chopin, Gretchaninov, Rachmaninoff, Arensky, Tchaikovsky.

(Nimbus Prima Voce CD NI 7935-36) She appeared as "Countess Vorontsov" opposite Ivan Mozzhukhin in the silent film The Loves of Casanova (1927), and as "Fatme" in Secrets of the Orient (1928).

After her retirement from the operatic and concert stage, she appeared in bit parts in talkie films such as Algiers (1938), The Chase (1946), Captain Pirate (1952), and Hot Blood (1956).