Erin Patterson's conviction for the deaths by poisoning of her estranged husband's relatives has prompted fevered speculation across Australia about her motive.

The 50-year-old's in-laws died in 2023 after eating beef Wellingtons prepared by Patterson - they were later found to contain toxic mushrooms.

Emergency doctor tried to get mushroom cook to stay at hospital for treatment but Erin Patterson left, despite seeing her severely ill in-laws.