It was Grey Gardens meets Crocodile Dundee. It was two aging sisters enduing an increasingly awful existence amid decaying splendor - until one of them died and the other disappeared.
Sources:
The Peculiar World of Margaret Clement, by Annie O'Riley, April 28, 2014
https://www.oddhistory.com.au/gippsland/the-peculiar-world-of-margaret-clement/
https://www.historicmysteries.com/lady-of-the-swamp/
https://www.heraldsun.com.au/news/law-order/from-riches-to-rags-then-death-the-mystery-of-gippslands-lady-of-the-swamp-margaret-clement-and-the-footballer-suspected-of-her-murder/news-story/1f5a96486e3834124dc65187984da2d1