I think her jealousy of her parents' affection and attention towards Caylee was a factor for Casey wanting Caylee out of the picture, but I think the over-riding factor was she just wanted to be free to do whatever she wanted to do--she wanted the night life--and for her, Caylee was an albatross - and she just had to get rid of her---She has no remorse (obviously) for her actions. She is as cold as ice-- she never batted an eyelash in her interviews- she lies with such ease-- she is free because of several factors which include the prosecution going for the death penalty without a cause of death, and other intangibles that occurred during the trial. Apparently the lie about George was believed by some jurors: IMO this was just a really poor jury: they fell for the manipulation by the defense: putting her in a low chair making her look smaller and vulnerable, Casey's mother covering up for Casey during her testimony- she out and out perjured herself to save her daughter. In any event, Casey is free as the breeze: I just hope and pray she has no more children.