I agree that Kathryn's behavior on the reunion part 1 was very painful to watch. I know a lot of people think that Thomas and Kathryn "carry" the show, and if that is the case, I won't be tuning in any longer. I found myself recoiling into my couch as the outbursts went on. There's a difference between television drama that is a by-product of cattiness and cliques and drama caused by all out drug fueled, irrational and combative behavior / poor mental health. I would rather watch the former and so I will happily move on to other pseudo-reality shows.
I think Andy Cohen should be asham