Yes, I'm aware of that, but I was thinking of it from CWs point of view... someone who would do something as heinous a he has would probably not accept the blame for getting caught. He would definitely see what NU did as snooping. Now he's got a lot of time to sit and stew and blame NU for his plan failing. NU can't be oblivious to her role in bringing in LE way before CW was ready for them, and thank God she did! Otherwise he may have gotten away with it, or at least had more time to destroy more evidence, stage the scene, and plan out his lies to make it more difficult or even impossible to catch and convict him.