I think that Act II is probably where most of your study is going to lie. Elizabeth's hurt and the betrayal she feels is evident in this Act. I think that the opening discussion between she and her husband at the start of the Act might be reflective of how hurt she is. There is a disengagement in both her language and her tone towards John, reflective of his affair and the lingering effects it has on their relationship. At the same time, I think that the hurt is present when she senses what she feels to be John's inaction towards Abigail. In Elizabeth's mind, she cannot understand how John can take such an isolationist view on what is happening with his understanding that Abby is making everything up as she goes along. In Elizabeth's mind, she takes this as evidence of John still having feelings for Abby. When Hale is questioning the Proctors on the ten commandments and Proctor forgets the one on adultery, Elizabeth's correction of John is another instance where hurt and anger seem to converge. Her reminder of this commandment to him is not made out of anything but a combination of hurt and resentment, feelings borne out of her husband's affair and the need to construct life after it.