I'm also fascinated by a number of aspects to this case. First is Casey's ability to lie about, apparently, everything. Her entire life was a lie, really, and it amazes me that she was able to carry this off.
Remember the text messages when Amy couldn't find her money (because Casey had stolen it!) and Casey was being so sympathetic about it? How can someone do that?
And then that first phone call, where her family and friends are trying to pry some information out of her and the only thing she wants is Tony's phone number. Can you imagine? Your two-year-old is missing, you've been arrested, your mother is weeping, and all you want to do is talk to your boyfriend-of-the-moment.
I remember attending a local court case of a stepmother who killed her stepdaughter. When she was on the stand talking about what happened, she got quite annoyed and said "You are all acting like I am a bad person! I was a good mother to her! I fed her, I took her to church on Sunday, I made sure she had nice clothes and toys. There was just that one incident when I lost my temper and hit her." (Yes, hit her hard enough that you fractured her skull and she died.) Casey completely reminds me of this person. In her mind, the killing of that child was just a minor thing and completely outweighed by the fact that she took the child to church every week.
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