chunk: Later, Sara gets a text from Irene, saying she needs her right away. Sara informs Stephen she will be at Irene's place. When she gets there, she finds Irene held hostage by Rebecca with a revolver. Rebecca reveals that she was responsible for what happened to Tracy, Cuddles, Professor Roberts, and Jason and that she did it all to win Sara's friendship. Rebecca wants to kill Irene in order to finally have Sara all to herself. Stephen arrives just in time to help stop Rebecca from pulling the trigger on Irene. Sara reaches for the revolver to shoot Rebecca, however, the cartridge is empty. Enraged at this, Rebecca picks up Sara and tries to strangle her to death, but Sara stabs Rebecca in the back with a boxcutter, which kills her.
  Sara moves back into her dorm and moves the extra bed out of her room with the help of her boyfriend Stephen, proclaiming that she does not want a roommate for a while.