As a teenager slaughtered chickens, had visions of the Cheshire cat and thought about killing people, her father mistakenly believed her behaviour was down to attention-seeking, bullying and video games.
Just two weeks after the teenager confessed to her mother she thought about killing people "all the time", the girl killed 10-year-old Biddy Porter at a property in rural NSW, an inquest has been told.
Biddy, remembered as a vibrant, clever and creative child, died of multiple injuries while staying at the property for the school holidays on July 8, 2020.
