Griller Quartet, and was involved with Richard Goldner in the foundation of Musica Viva Australia. She befriended many displaced European musicians who had emigrated to Australia. During this time she played the Australian premiere of Bartók's Second Piano Concerto. Both of the Menuhins' marriages to the Nicholases ended in divorce. Hephzibah's own two children remained with their father, Lindsay Nicholas. Career and causes In 1947, she played at the Prague Spring Music Festival in a concert organised by Paul Morawetz, a Melbourne businessman. He took her to see the Theresienstadt concentration camp, which had a profound effect on her, forcing her to confront the meaning of her own Jewish heritage, and they entered a romantic relationship which lasted for several years. In 1951 she and Yehudi played at the opening of the Royal Festival Hall in London, then made a concert tour of Australia and played and broadcast for the ABC. She supported all types of causes with concerts and recitals, such as the National Music Camp Association, and she was outspoken about the influence of television on children. In Sydney she was soloist in Juan José Castro's piano concerto, with the composer conducting (he was at that time the chief conductor of the Victorian Symphony Orchestra). In 1954 she moved to Sydney, where she gave concerts and opened her home to anyone in need. London In Sydney, Hephzibah Menuhin met and became involved with Richard Hauser, an Austrian Quaker sociologist and social commentator who had moved to Sydney with his family, then wife Ruth Hauser, and their daughter Eva. Hephzibah divorced her husband and married Hauser in Sydney in 1955. Two years later Menuhin and Hauser moved to London with their daughter, Clara Menuhin-Hauser, where they fostered Michael Alexander Morgan, a boy of mixed Welsh and Nigerian background and who grew up with Clara. They founded the Institute for Human Rights and Responsibilities, and the Centre for Group Studies, and later moved to Friends Hall, a Quaker settlement house in Bethnal Green, in the East End of London. They later ran a Human Rights refuge from their house at 16 Ponsonby Place in Pimlico. This also became the base for The Institute for Social Research, which Sir Richard Hauser ran until his death. They worked on small-steps conciliation and attempted to help minorities all over the world, and she was a passionate supporter of women's and children's rights. In