I had to edit down the original question. I think that more of it could be posted in an additional question, though. It seems to me that a working definition of propaganda might be in order: "the spreading of ideas, information, or rumor for the purpose of helping or injuring an institution, a cause, or a person." Certainly, this definition would apply to Abigail. Her histrionics at dinner that evening and the idea that since Elizabeth owns a poppet, given to her by Mary, she must be responsible for Abigail's supposed pain is an example of propaganda. It is propaganda because it is rooted in the spreading of a rumor in the hopes of making Elizabeth to seem as a witch, causing her both a lack of reputation and her imprisonment along with eventual death so that she can get John Proctor to herself. In Act II, Abigail has mastered the ability to peddle her propaganda to discredit those who she perceives as an enemy. For Abigail, the injury to people like Elizabeth is the most important end. Her use of propaganda in the form of rumor and insinuation to accomplish this is evident in Act II, scene 4.