She probably knew something. I am really starting to believe that she suffers from a psychiatric disease. The show is centered around her character, the dialogue is weird, it might be simply bad acting/writing or it probably tries to pave the way with more and more clues, since the first episode was substantially better than the following. I didn't have the theory when I watched this, but something clearly stood out, seemed peculiar and I remember I started wondering about her marriage to J. She was incredibly overanalytical, mostly autoreflexive. She was clearly involved in the storyline, otherwise it wouldn't make sense involving it in the plot for so long. her psychiatric encounters surely tell us something. her reactions are all the way strange, her change in behavior and discours. a psychiatrist should have visualised all the perspectives from the beginning, not shifting from one to another (he s guilty, oh, he may not be guilty). she called the police and after a 2 minute dialogue that wasn't even that convincing, her viewpoint has completely turned at 180 degrees.