Born in Schaffhausen, Wolfensberger studied piano with Elsa Burkhard at the Zurich University of the Arts.
In addition, she studied piano with Guido Agosti and Anna Hirzel-Langenhan as well as harpsichord with Barbara Vignanelli at the Accademia Nazionale di Santa Cecilia in Rome.
Wolfensberger was a reviewer at the Schaffhauser Nachrichten [de], the Neue Zürcher Zeitung and the Landbote.
From 1962 she was a member of the board of directors and from 1983 to 1987 president and head of auditing of the SMPV Schaffhausen.
[2] She was state expert for diploma examinations of the conservatories in Zurich, Winterthur, Bern and Schaffhausen.