- Residences: Hamburg.
- Relation to Mahler: Friend of Gustav and Justine Mahler.
- Correspondence with Mahler: Yes.
- Born: 00-00-0000
- Died: 00-00-0000
- Buried: 00-00-0000
A widow living in Hamburg. She and her daughter Toni (1876-1942) were particularly close friends of the Mahlers. Her mother, Helene Hertz, is also mentioned in his letters. Justine later made a trip to Italy with Adele Marcus.