Ottla:[...] Franz's dad and mom lived until 1931 and 1934, respecively. They were buried in the same plot he was.
His sisters did not meet so kind a fate. During World War II, Elli and Valli and their families were shipped off to the Lodz ghetto, and apparently died in the uprisings there or were sent to death camps. Ottla separated from her Gentile husband, Josef David, since she felt she had no right to avoid the suffering of her people, and was sent [1942] to the Theresienstadt (Terezin) concentration camp in northwestern Bohemia. She volunteered, in 1943, to help accompany a trainload of children somewhere, which turned out to be Auschwitz. Here's the entry in Auschwitz Chronicle 1939-1945 by Danuta Czech:
7 October [1943] - 1,260 Jewish children and their 53 care givers are transferred from Theresienstadt in an RSHA transport. They are killed the same day in the gas chambers.
http://victorian.fortunecity.com/vermee ... graphy.htm
All three Kafka's sisters (the two others at Lodz) were murdered by the Germans:
Be blessed.