The trial of a nurse accused of murdering two women in a nursing home on the New South Wales north coast has been shifted to Sydney, and will start for a third time next week. Forty-nine-year-old Megan Haines has pleaded not guilty to two counts of murder. It has been alleged she gave fatal insulin injections to 82-year-old Marie Darragh and 77-year-old Isabella Spencer at the St Andrews aged-care centre in Ballina in May 2014. A second jury was discharged in the Supreme Court at Lismore today. The trial is due to start again on Monday.