She heads Wright Prospecting. In 2010, she and her brother received A$1 billion from Gina Rinehart after she was legally forced to give up twenty-five per cent in the Rhodes Ridges iron ore mine 60 km west of Newman in the Pilbara. She owns fifteen per cent of Hamersley Iron shares from the Rio Tinto Group, Gina Rinehart owning the other fifty per cent. In September 2012, she sued Rinehart to recover fifty per cent of 4, 5 and 6 tenements of the Hope Downs mine, named after Gina Rinehart's late mother, Hope Hancock.
She is married, and has seven children. She is the second richest woman in Australia, after Gina Rinehart. In 2014, the Business Review Weekly assessed Bennett's net worth at A$1.55 billion. In September 2009, she sold her mansion in the Mosman Park neighbourhood of Perth for A$57.5 million and downsized to a A$8 million apartment in Fremantle. In 2010, she sold her A$20 million yacht.