[1] Biedermann received a specialization in internal medicine in 1983, and she established a medical practice in Vaduz.
She has also been a member of the board of directors of the Liechtenstein Elderly and Sick Aid, the Crisis Intervention Team, and Familienhilfe Vaduz.
Biedermann has served as the president of the Liechtenstein Music School Foundation and the Vaduz Pregnancy Counseling Center, holding the latter position for over twenty years between 1986 and 2007.
[1] In 2009, Biedermann moved to Vaduz and ran in that year's election for the Landtag of Liechtenstein.
[1] Standing in the Oberland constituency as a member of the Patriotic Union party, Biedermann was elected to parliament, receiving 4,264 votes (42.5%).