Eventually, Knight began attending high school in Muswellbrook, a small town some 150 miles north of Sydney. There she developed a reputation as a loner. Although she could sometimes behave like a model student, she was known to burst out into fits of rage.
At 15, Knight left school, still unable to read or write. Nevertheless, she soon found a job that she loved. Employed by the local abbatoir, she excelled in the environment and rapidly rose through the ranks. Apparently, she was even given a personal set of knives – which she took home and hung above her bed.
In 1973, Knight began a relationship with an alcoholic co-worker named David Kellett. And even though Knight’s own mother warned him that her daughter was unstable, the pair married the next year. On their wedding night, Knight attempted to strangle Kellett – and things only went downhill from there.