Coroner Jane Bentley released findings into death of Tara Brown, 24, in 2015
Ms Brown was run off a Gold Coast Road, Queensland, and trapped in her car
She was then beaten to death with a steel fire hydrant cover by Lionel Patea
Shocking details have emerged about Patea's violence towards Ms Brown
Patea pleaded guilty to her murder and was sentenced to 20 years in jail in 2017