When Catherine McDougall visited her daughter for the last time, she knew something was wrong.
In 2007, Chantelle McDougall, 27, and her six-year-old daughter Leela were living in an isolated farmhouse in Nannup, a three-hour drive south of Perth, with self-styled spiritual leader Simon Kadwell.
During her visit, Catherine sensed the couple were planning something because a passport arrived in the mail for Leela, although Chantelle