 Among the roles in her stage repertoire were Tatyana in Pyotr Ilyich Tchaikovsky's "Eugene Onegin" and the title heroines in Jules Massenet's "Manon" and Puccini's "Madama Butterfly".While on tour to Constantinople in 1917, the Russian Revolution occurred which proved ill fortune for Kremer and her family who were known supporters of Alexander Kerensky.The family's Odessa property was confiscated, Heifetz was imprisoned, and their daughter, governess, and Kremer's parents were forbidden from leaving the city.