General Notes
Nationality: Dutch
Notes from the Crosby Family Tree...
KH names her as Elise Osterman and mentions Berlin.
Elise appears in the Berlin address books in 1931, 5 years after her husband's death (the address continued to appear in Bruno's name until 1930).
Yad Vashem lists an Elise Auguste Halberstaedter nee Ostermann, born 20/08/1872, who had spent the war in the Netherlands and was deported from Berlin to Sobibor camp where she died on 23/04/1943.