Besides the acting classes with Dorothea Neff and Eva Zilcher she also learned singing ballet- and jazz dancing and playing flutes and the piano.

She played in several German film productions for instance Xaver Schwarzenberger and also the TV Series Die Stein and 11er Haus In theater, Stemberger's first success was as Paula in The Abduction of the Sabine Women at the Wiener Volkstheater (1986 to 1987).

She also starred in George Tabori's adaption of Othello and again in Antony and Cleopatra from Peter Stein at the Salzburger Festspiele as well as in My Fair Lady at the Wiener Volksoper and other Theaters in Vienna, Hamburg and Munich.

In addition to her work as a theater and film actress Stemberger performed together with the ensembles The Austrian Salonists and the String Quartet Sonare stage programs in which they mainly humorous from the works of writers such as Alfred Polgar, Karl Kraus, Anton Kuh, Isabel Allende, Vladimir Kaminer, Umberto Eco.

[2] From 1999 to 2005 they had the musical and artistic stewardship of the Mondseetage a festival for Kammermusik taking place in the Austrian Mondsee.