IMO, Casey was always Casey and JG just didn't see it. But you bring up a good point. There could have been a trigger that threw her sociopathy into high gear. The Feds kept asking GA or insinuating to him that something happened to Casey "two years ago". One time they flat out asked GA "what happened to Casey two years ago?" GA brushed it aside and never gave an answer. Has anyone ever figured out what the agents were talking about? It's driving me nuts.
IDK about two years ago....but KC was telling pretty big whopper's over three years ago, when she knew she was pregnant w/Caylee