In The Crucible, a play by Arthur Miller, Elizabeth Proctor is the wife of John Proctor, the central figure of the play. Elizabeth has had three children with John Proctor and is expecting a fourth child. Elizabeth employs Abigail, who is the niece of Reverend Parris to work for her as a servant, that is, until Elizabeth let her go.
Elizabeth, the expectant mother of three, discovered that John is having an affair with Abigail. This of course soured Elizabeth on retaining Abigail's services. Abigail, being released of her duties and being separated from the man she covetously loves, pretty much soured Abigail on Elizabeth. Since Abigail is neither afraid nor ashamed to lie and manipulate people and create disastrous circumstances for entire communities all because she can't have her way, she is also unafraid to loath Elizabeth for no better reason than being married to John and being the mother of his children and for not wanting John's mistress working in her home.
Elizabeth Proctor is the wife of John Proctor. The Proctors own a farm near Salem.
Abigail Williams used to work as a maid for Elizabeth Proctor. While she was working in the Proctor household, she had an affair with John Proctor. Because of this, she is very jealous of Elizabeth. She still wants John and feels that he still wants her.
Because she feels this way, she uses her influence with the court to get Elizabeth accused of witchcraft. Elizabeth is convicted but does not get executed because she is pregnant.