Sorry to disagree but some of her speculations--which may have been influenced by things she learned from LE while questioning her--or from neighbors or some other "grapevine"--make sense. She, I believe, was reported as saying she felt the perpetrator/s knew the family routine, were known to the family. Makes sense. I think if we go back to some of her interviews with reporters, we will find some substance. No I can't site the specific sources at this time, but I have followed every thread her summarizing her interviews and the first news stories as much as I could. She is not "wholly unreliable," though she may speculate, get confused, or perhaps overstep her knowledge. I'd say JW has proven himself unreliable, as he was caught out in lies. Not the same thing when one talks to reporters. Most of us would be wisely cautioned not to. I have made that mistake once in my life. They absolutely have their ways.
If you are referring to NG, she was quoted as saying she has no idea who did this to the family.