Ernest Heink was again thrown out of work when Saxons were banned from government positions, and departed to Saxony to find work. Ernestine, pregnant, did not follow him; they were divorced in 1892 when Ernestine was thirty-one years old. She came to the United States to make a brief foray into the Broadway theater, playing in Julian Edwards' operetta Love's Lottery, in which her performance was noted for the fact that she often broke off to ask the audience whether her English was good enough. She left the production after 50 performances and soon returned to opera.
After the divorce from her first husband, she married with Paul Schuman, an actor and director of the Thalia Theater in Hamburg in 1892. Ernestine acquired a stepson, Walter, and had three more children with Paul: Ferdinand Schumann, Marie Schumann and George Washington Schumann. This last boy was born in New York City, named by her good-humored mother with suggestion of the doctor who delivered the baby. One of their children, Ferdinand Schumann-Heink (1893–1958) was a prolific, though mostly unbilled, Hollywood character actor. It was a happy family.
Schumann-Heink performed with Gustav Mahler at the Royal Opera House, Covent Garden, during the Hamburg company's London season in 1892, and became well known for her performances of the works of Richard Wagner, forging "a long and fruitful relationship with [the Annual] Bayreuth [Wagnerian music Festival]" that "lasted from 1896 to 1914".