Shut it! Now shut it! Now, look you. All of you. We danced.
BETTY: You did, you did! You drank a charm to kill John Proctor‘s wife! You drank acharm to kill Goody Proctor!
ELIZABETH: John, if it were not Abigail that you must go to hurt, would you falter now? I think not.
Now look you… I see what I see, John.
CHEEVER: Why… (Draws out a long needle from doll.) it is a needle!
Abigail Williams, sir. She sat to dinner in Reverend Parris‘ house tonight, and without word nor warnin‘, she falls to the floor.
At this point, Abigail's true intentions were exposed by Betty. Abigail then responds back with pure anger, because she has to find a way to not have the other girls to confess on what actually happened in the woods.
This is where John Proctor finds out that his wife does know what happened to him and Abigail. She is basically saying that if were someone else he would go to the court to testify.
This is where everyone comes to the false conclusion that Elizabeth used the voodoo boll against Abigail. During dinner, Abigail stabbed herself with a needle, and Mary Warren gave the doll to Elizabeth to get her in trouble. (Unintentionally)