I think Kristina is one of Red John’s pawns. When she was confronted by Jane about going on TV, she had that serene look on her face, like she knew him so well. (Oh, I know…she’s a psychic. Whatever). She also talked about how Jane “lied about” Red John. She had the same look on her face, and calm speech that the secretary had when she was confronted…before she was killed, of course.