Mushroom murderer Erin Patterson is challenging her conviction on seven grounds, taking issue with jury management during deliberations and “oppressive” prosecution questioning while she gave evidence in her trial.

The 51-year-old was convicted and jailed for life in September with a non-parole period of 33 years after being found guilty of murdering her former in-laws, Don and Gail Patterson, 70, and Gail’s sister Heather Wilkinson, 66.

A jury found she deliberately served beef Wellingtons laced with death cap mushrooms to her lunch guests in July 2023 at her Leongatha home in regional Victoria.

She was also convicted of the attempted murder of Heather’s husband, Ian Wilkinson, 69, who fell seriously-ill after eating the meal but survived.

Patterson’s lawyers have lodged a formal appl

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