New Delhi, Jan. 7 -- Auschwitz survivor Eva Schloss, the stepsister of teenage diarist Anne Frank and a tireless educator about the horrors of the Holocaust, has died. She was 96.

The Anne Frank Trust UK, of which Schloss was honorary president, said she died Saturday in London, where she lived.

Britain's King Charles III said he was "privileged and proud" to have known Schloss, who co-founded the charitable trust to help young people challenge prejudice.

"The horrors that she endured as a young woman are impossible to comprehend and yet she devoted the rest of her life to overcoming hatred and prejudice, promoting kindness, courage, understanding and resilience through her tireless work for the Anne Frank Trust UK and for Holocaust ed...