The teenager’s body was found dumped by a road south of Saskatoon on March 25, 2015 with a belt discovered nearby.
The Star Phoenix reports that the case broke when investigators found a photograph of the two friends uploaded to social media six hours before her body was found. In the photo, Antoine was wearing a belt that matched the one found near Gargol’s body.
An autopsy determined Gargol died of strangulation, prosecutors said Antoine she used it to garrote Gargol.
The same night, Antoine posted on the victim’s Facebook page: “Where are you? Haven’t heard from you. Hope you made it home safe.” That was an attempt to hide her involvement, Ritter said. She then lied to police, saying she was with Gargol on the night she died, but left to go see her uncle.
The alibi fell apart when Antoine’s uncle later revealed that Antoine had told him to go along with her alibi.
An informer eventually approached Gargol’s family with information about Antoine’s involvement in her death. The person said Antoine, intoxicated and hysterical, came to their home and said she got into an argument with her friend and choked her.
Defence lawyer Lisa Watson said her client remembers leaving a house party with Gargol and her last memory is of Gargol taking her phone.
“I’ll never forgive myself. It’s wrong and shouldn’t have happened,” Antoine wrote in a statement Watson read aloud in court.

Double-faced friend Cheyenne Rose Antoine, has been sentenced to seven years in prison for manslaughter

In addition to trying to cover her tracks with the Facebook message, Antoine also  told police that on night the pair had been out drinking, Gargol had gone home with an unknown man at the end of the night and she did not know what had happened to her friend.
it was only after police later received a tip-off that Antoine had made the drunken confession to the killing, CBC reports, that she admitted that they had gotten into an argument. She maintained that she does not remember killing Gargol.
She pled guilty to manslaughter and was sentenced to seven years in prison on Monday.
The victim’s family were on hand for the sentencing. “You were her friend. She trusted you,” Gargol’s stepmother, Kristi Wickenhauser, told Antoine.
“she could have taken Gargol to a hospital instead of leaving her to die in the street”.
In his victim impact statement, Gargol’s father, Everett Hillbom, described feeling angry and sad that his daughter’s life was cut short. He was supposed to fix something on her car the day she died — “The last time I would have hugged her,” he recalled.

In her court testimony Antoine admitted the belt used in strangling Gargol [left], belonged to her, she claimed she couldn’t remember much else. The belt was found near the body

Weeping intermittently throughout the victim impact statements, Antoine would take off her glasses and wiping away tears. In a statement released through her attorney, Antoine said: ‘I will never forgive myself.
‘Nothing I say or do will ever bring her back. I am very, very sorry…It shouldn’t have ever happened.’
Lisa Watson the court  that a month before Gargol’s death, her client went to police to report years of abuse at the hands of her foster parents. She didn’t feel supported and turned to drugs and alcohol, Watson said.
“My client had some very deep, personal issues that she was not dealing with, and unfortunately they turned into a very tragic situation for all involved,” Watson told reporters after sentencing.