Mankiewicz was the daughter of the stockbroker and writer Joseph Samuel Tauber (1824-1879) and his wife Louise, née Edle von Hönigsberg (1824-1894).
Her great-grandfather Israel Hönig von Hönigsberg was a tobacco merchant and was the first Jew to be ennobled in Austria.
She worked as a writer and translator and married the First Lieutenant and Serbian Consul General Ernst von Schuch.
However, as a woman she was not allowed to study in an institution, so she received private art lessons from teachers like Hans Makart, who portrayed her several times.
Subsequently, she was honored with a medal by the jury of the World's Fair and, at the suggestion of the painters Ernest Meissonier, Léon Bonnat and Émile Auguste Carolus-Duran, received the distinction of Officier de l'Academie.