Hi
Just searched for Marie Hofteufel and saw your entry.
In google there are several pictures of her and some more information
https://www.google.com/search?sa=X&rlz=1C1PRFC_enIL528IL528&...
And some more:
https://archive.org/details/versteigerungder00doro_5/page/n1
apparently she lost all her money in Nov 1929.
Versteigerung der Wohnungseinrichtung, Möbel, Gemälde, Silber, Pelze, Porzellan, Bronzen, Textilien, der ehemaligen Hofburgschauspielerin Marie Hofteufel