Elizabeth Proctor does not die in The Crucible—she is still alive at the end of the play. She is accused of witchcraft and arrested after Abigail claims Elizabeth’s spirit stabbed her with a needle, using the poppet Mary Warren gave Elizabeth as supposed evidence.
Elizabeth is spared from immediate hanging because she is pregnant. When Danforth tells John Proctor this in court, he expects John to drop his challenge to the trials, since Elizabeth is temporarily safe. John refuses because other innocent people, including Rebecca Nurse and Martha Corey, are still condemned.
In the final act, Elizabeth is brought to speak with John before his scheduled execution. Hale and Parris hope she will persuade him to confess falsely and save his life. John first agrees to confess, then tears up the written confession because he will not publicly attach his name to a lie. Elizabeth does not stop him. She recognizes that he has recovered his integrity, even though that choice leads him to the gallows.
In the end, Elizabeth survives the witch trials, while John Proctor dies. Her survival highlights one of The Crucible’s central contradictions: the court will spare someone for practical reasons, yet it still destroys lives by demanding lies in the name of justice.