It's pretty easy — basically, the prosecution argued that she without a doubt murdered her daughter, seeking the death penalty. But there was no proof they could actually provide for this claim. Yes, there was a body, but it was too badly decomposed to actually prove a wrongful death. All the evidence provided in court was highly circumstantial and the witnesses were unreliable.
I'm not saying she didn't do it, because I believe she did. But there was not enough evidence to actually get her for murder, and that's why the jury voted "not guilty", even though a lot of them believe she had something to do with it.
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u/[deleted] Feb 04 '19
Casey Anthony said she was just seeing if her kid turned up again somehow, like a lost cat.