Pondering whether Betty knew about Elly, and vice versa

Here is a question for Ruby family members to ponder. Elly and Helga Ringel reached New York in April 1941. Betty Wohlgemuth died in Berlin in February 1942.

Was Elly able to send word to her mother that she and Helga had safely arrived in America? If so, it would have been a great cause of comfort to Betty in her last year of life.

And conversely, did Elly receive news of her mother's death? To have known that her mother died of natural causes in a Jewish clinic in Berlin would have provided a sense of resolution and perhaps even relief.