MORWELL, Australia (Reuters) -The trial of an Australian woman accused of murdering three of her estranged husband's elderly relatives using toxic mushrooms entered its final stages on Wednesday, with the jury soon to begin its deliberations in a case that has gripped the nation. Erin Patterson, 50, is charged with the murders of her mother-in-law Gail Patterson, father-in-law Donald Patterson and Gail's sister, Heather Wilkinson, along with the attempted murder of Ian Wilkinson, Heather's husband, in July 2023. The prosecution accuses her of foraging for poisonous death cap mushrooms and knowingly adding them to individual portions of Beef Wellington that she served to her guests at her home in Leongatha, a town of about 6,000 people some 135 km (84 miles) southeast of Melbourne.