Hannah says near the beginning of side two of tape one that the grief counselors were changed out, and makes a comment saying that 'it was really very unfortunate, but that's for another tape!' But in the final episode of the season she states that she is feeling 'good' after recording all of the previous tapes, and she doesn't secretly record the conversation with Mr. Porter until after she has recorded all twelve of the tapes, including the second side of tape one. So she couldn't have known what Mr. Porter was going to do because he hadn't actually done it yet.