A nurse has been found guilty of murdering two elderly women at a nursing home on the New South Wales far north coast. Megan Haines killed 82-year-old Marie Darragh and Isabella Spencer, 77, who were found dead at St Andrews nursing home in Ballina in May 2014. The jury heard both women were injected with a lethal dose of insulin hours after Ms Haines found out the pair had lodged complaints against her. The court also heard allegations that Haines, while watching a crime show with her former partner, had boasted about using insulin to kill a person without being detected. The jurors took four hours to reach their verdict in the NSW Supreme Court.