I am quite sure the Kim had only dreamed of ever being on national tv, let alone being "interviewed" by a nationally known tv personality. She was, no doubt, on an ego high.
And getting to feast on good eats in a fine dining room probably made her happy, too. It's unlikely she's ever been a guest at such a nice place before. They probably got the red carpet treatment because of Bradley's status, so that pumped her up, too. Maybe she got to stay the night there. I don't think 60M pays for stories, but they can put people up in swanky digs for a day or two, wine them and dine them on an expense account, so maybe that's what happened here. Maybe they paid for the make-over and the clothes, too.
The fact that she seems to have enjoyed herself at the interview doesn't worry me.