MF, once again you have surpassed expectations. You point out with distinction what I have been trying to say. On the one hand they were amateurs, just well to do snobs seeking social status. On the other they are credited with street smarts, criminal behavior, legal savvy of seasoned, hardened ex-cons. They can't win. If they had been able to recall and articulate just what happened in each situation asked about, they would be tarred and feathered for being too calm. If they had cried, you know who would say they were crocodile tears. If they misspeak, they are killers. If J has a quirky look on his face, he's the devil. They are not allowed to win, period.
They refuse to do as you suggest, but would be so helpful. Put yourself in her shoes. Go, right now, and find your six old year tied up, head broken in, dead, cold, blue. See how you handle the worldwide media barrage and the cops' unrelenting pursuit of you as their primary suspect. No one will. They'll blow this off and without hesitation continue on their merry way blasting her as if she was a Nazi war criminal.
See TWELVE ANGRY MEN.