The photo shows Antoine wearing a belt that matched the one found near the body, The Star Phoenix reports.
Antoine also posted on Gargol's Facebook, writing 'Where are you? Haven't heard from you. Hope you made it home safe,' in an alleged attempt to cover her tracks.
Antoine initially told police that the pair had been out drinking on the eve of Gargol's death but that she had gone home with an unknown man at the end of the night and did not know what had happened to her friend.