I just read that story about "we don't know half of it".
If the defense team is going to use the "some other dude did it" defense and blame it on Zannie and her kidnapping sister, who managed to kidnap little Caylee, hold KC at bay, and still do it with two other children there(that is amazing if you think of it). They had better produce Zannie, or someone else who saw her, talked to her, and touched her. The jury at this time will want to see Zannie because the defense team has had 6 months to have an excellent private detective find traces of this woman. Her NY license that KC kept talking about. They have to convince that guy who used to work with KC but did not know her, that he had Zannie babysit for him and let KC drop little Caylee off with his babysitter Zannie. He just forgot all about it, and that he is a really great friend with KC.
If they are crazy enough to use that defense, instead of KC is loony as a toony defense, all the lies KC has told will blow that up, and their lack of Zannie will kill it too. Of course KC is loony as a toony, but she does know right from wrong, which means she is responsible for her actions. Still that is a better defense.
Oh yes, one other thing, since KC has no one left to protect except the murders of her precious child, now is the time to tell the police everything so they can pick these kidnappers, killers up. There is nothing stopping her now from telling the truth.