[1][2][3] Both Brandes-Brilleslijper and Jaldati (nicknamed "Lientje") were in the Westerbork, Auschwitz and Bergen-Belsen concentration camps with Anne and her older sister Margot Frank.
[2][4] In 1939, she married Cornelis Teunis "Bob" Brandes (1912–1998),[4][5] and they had two children: Robert and Liselotte Dolores.
[4] After the Nazis invaded the Netherlands, Janny and Bob, along with Lientje, began to work in the Resistance.
While her husband and children escaped, Janny and Lientje were arrested,[6] in the summer of 1944, and were transported to the Westerbork transit camp.
Through the Red Cross, she contacted Otto Frank and informed him about the deaths of his daughters, Anne and Margot.