Elizabeth is well aware of the interactions between Abigail and her husband, but she could never have predicted what Abigail would do to get her way. Once Abigail learns how easy it is to accuse women in the village of witchcraft, she points her finger towards Elizabeth. Stabbed by Elizabeth's ghost, Abigail is seen with a needle stuck into her stomach. Elizabeth knows that she has not sent her spirit out and certainly has not bewitched Abigail. Outraged, Elizabeth declares that Abigail means to kill her and dance on her grave. Elizabeth realizes that Abigail's ultimate plan is to charge and kill under the guise of witchcraft, and then move in on her newly single husband, John Proctor.
In the play "The Crucible" Elizabeth is aware that Abigail wants to do away with her so that she can have a clear path to Elizabeth's husband. She expresses that she knows that the girl has been that way since she had wanted John.
Abigail had an affair with John and when he broke it off she was upset because she was let go of by Elizabeth. When Elizabeth goes to court she wants to protect her husband so she says that she let Abigail go because she was not satisfied with her work.