Honestly, I think with what we have right now, she could walk on everything connected to Caylee.
Yes, she has lied, but Casey was not the last verified person to be seen with the child, that would cast doubt.
We know of at least one very reputable expert who would testify that the technology used to detect decomp is hardly better than experimental.
THe same expert would testify that there are possibly other things that can form the bands on the hair. The banding is what is being determined as evidence that Caylee is dead.
As crazy as her story is, she has stuck to the important points, when, where, who.
There is only one person in the statements we have seen, that has said that Casey did not want Caylee and that person already destroyed her credibility by swearing that Casey called her for money and then backtracked and said it was a different Casey.
The car showing the signs of decomp was out of her possession. Even though there are no signs of tampering, the car was out of her possession for a little while.
There were no former complaints of abuse of mistreatment against anyone involved with Casey.
There are people, many of them, that will testify that Casey knew she could have signed Caylee over to her parents if she no longer wanted her and had no reason to do anything to her.
So for motive, we have nothing.
Opportunity, yes.
Means, yes.
A jury would be reluctant to send a 23 year old woman to jail. ( I think she will be 23 by the time she goes to trial.) They would need more than circumstantial evidence.
Remember, even though she has lied, I am sure that there will experts called to the stand to speak about compulsive lying.
ANd as far as proving Caylee is dead, good luck. There is evidence, but it is already being highly disputed as to whether or not the tests themselves are reliable. You can bet it will be ten times worse in court.