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In page Freda Du Faur:

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In June 1929, Cadogan died. Du Faur returned to Australia, where she lived in Dee Why, Sydney. At first, she lived with her brother's family and later in her own cottage. Her main interest was bushwalking in Dee Why and Collaroy.[2] She suffered from depression[citation needed] at the loss of Cadogan, and on 13 September 1935, she fatally poisoned herself by inhaling a quantity of coal gas.[1][4]