It is the editing, it has to be. They pretty much showed only the positive side on Survivor, but on TAR they probably had no other choice but to show how she really is. Also, maybe her sister brings out the worst parts of her personality. They are the TAR version of the Kray twins.
I just quoted you because I think your avatar is awesome. Any avatar with a cat in it deserves to be pointed out.
I felt the same way and as much as I hate to admit it I was softening to her a little. At one point I even thought, "If I only saw her play Survivor, I would probably like her." But then I saw the finale and remember just why I despised her. Well her and her sisters were also thieves and that was a big reason.