Living on Mount Carmel in Haifa, Newton became known as someone willing to document acts of violence against Arabs suspected of opposing British rule. She found herself in trouble in 1938 after publishing two pamphlets, "Punitive Methods in Palestine", which accused the British of atrocities and was denounced in the House of Commons as "all lies," and "Searchlight on Palestine; Fair Play or Terrorist Methods", which supported the 1936–1939 Arab revolt. The British issued an exclusion order and she was deported in October 1938. When she died of a heart attack in 1955, a British official said she had, "the exterior of an English woman and the mind of a Palestinian."