Klein was born Hetty Fisch in Bratislava, in Czechoslovakia on 30 May 1932.
Klein was a member of a group of Holocaust survivors known as the Boys, despite the fact the group consisted of over 200 girls.
The Boys were teenage and child-Holocaust survivors, who were brought to the UK after World War II for rest and rehabilitation.
Members of the Boys were held in Nazi labour and concentration camps and used as slave labourers. They had also survived World War II in hiding or as lone children.
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