The mother-of-two was in the care of a Lismore hospital in 2014 but was left to die naked and alone when her calls for help went unanswered.
The footage shows Miriam Merten staggering through the corridors of Lismore Base Hospital, after being left drugged and naked for hours - without any food or water - in the hospital's tiny "seclusion" room.
Miriam fell and hit her head at least 20 times, as the two nurses on duty completely ignored her.
The Coroner found Ms Merten died from "traumatic and hypoxic brain injury caused by numerous falls and the self-beating of her head on various surfaces."
He said this was "not done with the intention of taking her own life," reports The Daily Telegraph.
New Mental Health Minister, Tanya Davies, admits she had only been made aware of the "horrific" footage after inquiries by The Daily Telegraph.
"My stomach actually turned at one point," Ms Davies said after seeing the images. "I got to a point where I just closed my eyes because I didn’t want to see what was going to come next."
"I am still pretty much shaken by thinking that was happening to a lady. I was pretty disgusted."
Labor spokeswoman Tania Mihailuk says only a "full and transparent review" into the death would restore faith in the system.
"This is the Don Dale moment," she said. "It is sickening and appalling ... Premier Gladys Berejiklian must act immediately."
This article originally appeared on marie claire.