I agree with what you are saying. I think what Mariah is stuck on is that Meri seems to be taking no responsibility for her actions. She is blaming the catfish, Kody, Mariah leaving for college and everyone else but herself. She has to take some responsibility for that action and talk to Mariah (off camera) about how she made an awful mistake, she knows she hurt Mariah and the family, and that she is going to work to make it right with everyone. Of course for all we know this whole portion of the catfish and how Mariah is acting could just be for the show because TLC seems to be stringing this specific story line on as long as humanly possible.