[2] In 1867, she moved to Vienna and married banker and railway entrepreneur Samuel (later Georg) Hirschler, with whom she bore three children, Klara (1868), Dorothea (1869), and Otto Israel (1872).

[2] There she founded the Society of Women Writers and Artists (German: Vereins der Schriftstellerinnen und Künstlerinnen), of which she was the treasurer.

[3] Soon after her sister Luise's marriage to German Hispanist Johannes Fastenrath in 1881, she and her family left the Jewish community, converted to Roman Catholicism, and changed their surname to Forstenheim.

[4] Forstenheim's first-known published work was Caterina Cornaro (1875), a historical drama in five acts on the life of the last monarch of Cyprus.

She was also a regular contributor to various magazines, such as Bazar, the Gartenlaube, the Neuen Freien Presse, the Wiener Hausfrauen-Zeitung [de], the Berner Bund, and the Straßburger Zeitung.