Elizabeth responds first with confusion, then panic. When she was accused, John was outraged because he knew Abigail was behind it, so when John was accused after, she tried to persuade him to change his mind that witches "existed" so that he would be released. by claiming that he was a 'witch' and repenting (man those people really needed to get a life if they were just going around going like "I FOUND A WITCH, LETS DUNK THEM AND SEE IF THEY FLOAT LIKE REAL WITCHES" ._.