A 19-year-old teen in Australia was kidnapped, stabbed, burned, and then thrown off a bridge blindfolded by four of her former friends after she allegedly called one of them a "dog". 19-year-old Kayla Kendrigan was driven to the seven-meter high Windsor Bridge in northwest Sydney before being thrown into the Hawkesbury River. Despite her disability and significant injuries at the time, she would manage to swim to safety and find herself treatment.

The culprits have been identified as 19-year-old mother-of-one Brooke Browne, 22-year-old Matthew Leuthwaite, and a 16-year-old boy and a 17-year-old girl who have not been named because of their juvenile status. According to the Sydney Morning Herald, the four decided to attack Kendrigan while they were on their way to pick her up from a friend's house and then forced her into the boot of a Holden Commodore.

Kendrigan, who has "below average learning ability" could do little to fight back as she was transported to Browne's family home, tied to a chair with a phone charger, and then subjected to six hours of "vicious, unprovoked, and relentless group attack." Investigators say she was unable to fight back because of her "significant birth defect."

The horrifying details of her torture were revealed in a police report, with the 19-year-old reportedly being hit with a wooden bat, stabbed in both her thighs, and had 15 centimeters of her hair cut off. Following the vicious assault, she was left with deep bruising to her head and face, soreness, burn marks to her hand, and "severe emotional trauma."

After the attack, the four decided they would throw her off the Windsor Bridge and kill her to avoid any police investigation into the assault, driving her to the location at 5 am in the morning of Sunday, 23rd August. Kendrigan was transported in the hood of the Commodore and thrown off, though she managed to swim to shore and knock on the door of a nearby home, where police and emergency services were called.

Speaking about the incident, Kendrigan's sister Imogen Gibson told news.com.au that the 19-year-old was "still in a lot of pain." She said, "She’s heartbroken, and so is our family. I never will be able to understand why someone would do this to her. She was always sweet and gentle. She never got into fights or hit anyone." She added, "It pains my heart so much because my sister was born with one arm, so she has never been able to swim or fight, but she fought through that terrible night like a fighter."

Browne and the 17-year-old girl both handed themselves into the police, with the former confessing to her involvement in the kidnapping and assault. Both have been charged with attempted murder, aggravated kidnapping, wounding a person with intent to cause grievous bodily harm, and robbery with wounding. The 17-year-old appeared in a Children's Court to be arraigned while Browne was denied bail at Penrith Local Court and will remain in custody until her next appearance.

The 16-year-old was arrested at a home in Wallacia and charged with attempted murder, detain in company with intent to get advantage occasioning actual bodily harm, aggravated robbery and wounding a person with intent to cause grievous bodily harm. He is scheduled to appear in Children's Court on Friday. Leuthwaite also turned himself in at the Windsor Police Station on Wednesday and was charged with attempted murder, detain for advantage in company, aggravated robbery and wounding a person with intent to cause grievous bodily harm.