Casey Anthony has a serious personality disorder that can't be cured. At the very least, she can't admit the truth much less take accountability for her choices and actions back then and now. What was the purpose for her choice to participate in this documentary? It's possible it was just to make a few extra bucks and maybe more.
Casey is an outright serial manipulator (look up gas lighting). She can't redeem herself, now, because she has a motive. If she could, Casey would have too much to lose (the life she has now and more). She's almost 40 yrs old, she hasn't a daughter and a family anymore, she hasn't married yet, and she isn't the center of attention anymore. She's all alone. That's what her crying is all about. And, anyone who believes what she says, now, is easily manipulated.
A person who has genuine remorse would write a tell all, confessional, biography, get rich off of it, and move on with their life. There are reasons for why Casey hasn't written a book.
Casey was "aquitted" of the murder charges against her. It would be "double jeopardy" if the law tried her again. They can't retry her for telling the truth now anymore than they can retry O. J. Simpson if he ever had the courage to admit to the haneous crimes he committed. Pathological liars can't and won't ever tell the truth. They live in an alternate reality, and that's a fact.This documentary was boring and a waste of time.