Rois was born on 1 June 1961 in
Ottensheim,
Austria. From 1983 to 1986, she studied acting at the
Max Reinhardt Seminar in Vienna. Early in her career, Rois was one of the few professional actors
Christoph Schlingensief worked with. In Berlin, Rois worked at
Volksbühne (1993–2017) and
Deutsches Theater (2018–2022). In 2022, she joined the Volksbühne again. In 2014, Rois appeared in the documentary
The Decent One as
Margarete Himmler, wife of
Heinrich Himmler. ==Recognition==