In 1794, Ellmenreich separated from her husband and made her debut in Prague. She was then engaged by the impresario Emanuel Schikaneder at his Theatre an der Wien. In 1796, she went on tour through Italy.
In 1801, she returned to her husband in Germany. The following year, Johann Baptist Ellmenreich was engaged to Saint Petersburg. Friederike Ellmenreich used this time to study singing with Luigi Cherubini in Paris. Between 1805 and 1811, she performed as an opera singer in Strasbourg, Augsburg and Vienna.
In 1812, she was again engaged as an actress, but also partly as a singer at the Karlsruhe court theatre. This was followed by engagements in Hamburg (1817), Mannheim (1820) and Frankfurt am Main (1821–1837).
At the age of 61, she retired from the stage in 1836 and moved in with her son, Albert Ellmenreich, in Schwerin. Throughout her life, she published numerous translations and adaptations of mostly French and Italian opera texts, which were frequently performed.[1]