I hope you're not as stupid as you sound. So because you have some imagination of how it happened, you'd convict someone based on your fairy tale imagination?
The only thing she's proven herself guilty of is craziness and being a sociopathic liar. Not a killer.
The burden of proof is on the prosecution. It's better to let 10 guilty people walk free than to confine an innocent man. Innocent until proven guilty. The prosecution had more than enough to try for criminal negligence, at the very least, possibly more. But going for homicide requires PROOF. No motive, no weapon. Her parents had testified that they were more than willing to take her in (Caylee).
Instead, you have fools like Nancy Grace, a travesty of a former prosecutor, who has zero respect for the legal system she used to serve. She attacks the jurors, the defense, etc, playing judge, jury, and executioner, when she isn't exactly privy to any of the details of the case that the jury is.
I'm going into law--and trust me, as a DA, if you win a case like that, it takes months and months of preparation. I'd celebrate too, Nancy. And the jurors did their job. It was not proved beyond a reasonable doubt that the mother killed her daughter.
Maybe someday you'll find yourself on the end of some heinous accusation and be grateful that the idea of reasonable doubt is in place.