Rachel Van Amerongen-Frankfoorder was born on 23 January 1914 in Amsterdam, Noord-Holland, Netherlands. She was married to Eduard (Eddie) van Amerongen and Charles D. Lu-A-Si. She died on 20 April 2012.
Rachel van Amerongen-Frankfoorder, eyewitness of Auguste's death, states that the Nazis murdered her by throwing her on the tracks during her last transport to Theresienstadt.