I've always said I don't think she physically helped, but a couple things make me wonder if she knew:

1. NK made CW send a pic of his location at Cervi319. (Apparently she'd not asked for photographic proof of his whereabouts in any of the other communication transcripts received for discovery.)

2. CW sent pics of the actual oil batteries AND the field where SW was buried.

3. NK made CW send her the lyrics to the Metallica song 'Battery', when she could've just as easily googled then herself. (These lyrics include the words "...kill the family")

4. NK's phone pinged the tower closest to CW's home the morning of the murders. (She denied being in the vicinity and lived 20 minutes away)

5. An unknown small pickup truck the same color as NK's was seen by a neighbor parked near CW's home the morning of the murders.

6. NK's various interviews with police have large discrepancies from one to the next. (i.e. first interview she didn't think there was anything to worry about when SW went missing to the second interview where she said she was "terrified a pregnant woman and two little girls were missing.")

There's more but these are always on my mind when I think about this case. NK knows more than she ever divulged and we'll never know because CW made sure the investigation stopped, completely and abruptly, when he confessed and waived his right to trial. The haste of that decision on his part also gives me pause in regards to NK's involvement. . .