Evie betrayed Tracy in the movie "Thirteen" to protect her own reputation and avoid consequences for her actions. After Tracy's mother rejected Evie's plea to be adopted, which Tracy agreed with, Evie felt betrayed and retaliated by distancing herself from Tracy and framing her during a staged intervention. Evie manipulated the situation by convincing her guardian that Tracy had introduced her to drugs and alcohol, even planting evidence that was originally hers but blaming Tracy for it. This betrayal was a calculated move by Evie to shift all the blame onto Tracy to preserve her "good girl" image and avoid punishment. The betrayal deeply hurt Tracy, who believed their friendship was genuine, but Evie was ultimately using her as a scapegoat to escape repercussions for their shared misconduct.
