Also, I forgot where I read this but Pat Brown, the criminal profiler was explaining why JG kept saying, "The KC sitting in jail right now is not the KC I know. That's a completely different person." She said that KC, being a sociopath played the role of "attentive, loving mother" as long as it was getting her something - that something being Jesse. As soon as that relationship was over she no longer had any use for Caylee, hence the KC he no longer knows. That's why they say sociopaths change colors like chameleons.
On another note, as far as the A's wanting KC to attend the funeral, I am 100% convinced that CA is completely manic. When you look at her behavior from the initial 911 call to her 180 degree turnaround I bet the whole family lives in fear of her mania and does whatever she wants so they can survive. Another tasteless, attention-grabbing stunt by the A family.