Wolfthorn was known for her portraits, among others of Ida Dehmel, Richard Dehmel, Carl Ludwig Schleich, Hedda Eulenberg, Gabriele Reuter, family members of writers Hedwig Lachmann and Gustav Landauer, the family of architect Hermann Muthesius, opera singer Irmgard Scheffner, many actrices like Tilla Durieux or Carola Neher, and many other famous people of her time from Berlin, mainly female activists.