That's what convinces me. In order for her to have done the staging to make it look like a kidnapping means she would have had to care about what she did. I just don't think she cared. She killed Caylee and left her body in the trunk, only removing it when it smelled too bad. If she was really wanting to stage the kidnapping, why keep Caylee in the car? Why not immediately go dump her somewhere? It just doesn't add up. Casey didn't care enough to go that far to cover herself. It's just not in her to give enough of a crap to be that creative and try to cover up a murder. I think she did really come up with the kidnapping story when her mother pressed her, realizing the ONLY explanation for that duct tape that would work would be that she staged it on purpose. It would be the only explanation her mother would be willing to accept.
Also, she moved on. She was partying, celebrating her newfound, free life. Forget being a sympathetic victim, she was so over Caylee. It didn't matter anymore. It was moving on and living la Bella Vita for Casey, let her lawyers and parents clean this mess up. How does that fit into staging a kidnapping? She didn't act a thing like a mother whose child was kidnapped, yet the staging a kidnapping story is believable? She didn't beg for her baby back or not once act like a grieving mother even though she staged a kidnapping? I just don't get that. She didn't care enough to really play that story out, and she should have. She should have milked it for all it's worth, and she never did. Why stage a kidnapping and then not sell it? No, instead she shows no remorse and goes partying and lying for thirty one days, then lies some more after that. She didn't even go halfway with a kidnapping after supposedly taping up Caylee's face to stage a kidnapping. It just doesn't add up for me.
The only thing that makes sense is that she's cold blooded and lazy, and only came up with the story when her mother was right in her face about it. I think had she fled instead of being too lazy to try to get away, we never EVER would have heard the Zanny story. Instead, Cindy backed Casey against the wall, and thus the kidnapping story was born to cover the cold blooded murder of Caylee. Caylee got in the way of Casey's happiness and life, and Casey got rid of her. If that's not coldblooded, I don't know what is.