Could it be Felicitas Prinzessin von Thurn und Taxis??
Born 16 January 1889, died 3 March 1934
Or Gabriele Gräfin Kinsky von Wchinitz und Tettau, wife of Erich Thurn und Taxis?
Born 28 March 1883, died 28 October 1970
Or Luise von Thurn und Taxis, daughter of Franz Thurn und Taxis and cousin of Felicitas Taxis.
Born 4 May 1887, died 4 March 1949
Or (what I think) Mathilde von Thurn und Taxis, daugther of Egon Thurn und Taxis. She died only with 38 in Vienna. And her father was a member of the Vienna court, also in Hungary, because his wife Viktoria was from Hungary. And on the newspaper stands "Wien-Budapest"
Born 21 February 1874, died 7 May 1912 Vienna.
Also she looks like Vicktoria Edelsbacher:
http://forum.alexanderpalace.org/index.php?topic=14575.0