Mr Einstein’s Secretary (2023) by Australian writer, Matthew Reilly, features an orphaned character.

In 1919, Hanna Fischer is 17 and wanting to study physics. Her neighbour and mentor is Albert Einstein.

After her father is murdered, it is Albert Einstein who organises for the teenager to be sent from Berlin to New York to live with her sister’s mother.

However, Aunt Penny isn’t keen on having another child at home so Hanna is packed off to a live-in secretarial school - where she learns the skills to become Mr Einstein’s secretary.