IMHO. . . .NK did KNOW that Shanann was pregnant! It was out there in SM for everyone to see and we know that NK looked! I think it's evident that CW and NK had their own secret little world that was hidden from everyone else. They were fooling everyone and living this great fantasy! We'll probably never know the truth of NK's complicity or her manipulation of CW, who loved to be manipulated. We'll probably never know the truth about the depths of CW's and NK's deceit or depravity or what they really shared! I believe that there was more that was known by NK than what's she's admitted. I believe there was more going on between CW and NK than just a tryst. She was shopping for a wedding dress! They were planning living arrangements and finances! When the relationship was revealed, and eventually it would have been, one or both would have had to change jobs or would have lost their job, even if there had been no murders!