I just can't buy the fact that Cindy was involved from the beginning. Yes, her behavior's been off the wall, and not what we'd expect from somebody in this situation -- then again, we all react differently to trauma, grief and stress. I giggle uncontrollably at funerals, for example (sorry mom, nothing personal!)
The 911 calls sound genuine to me. I think Caylee was an 'afterthought' because, at that time, she assumed Caylee was okay, and that Casey would either cave and lead her to her granddaughter, OR the police could force that situation when they got there, IF Casey continued to refuse to reveal where she was at.
I am fairly emotionally detached, and very little pulls at my heartstrings, BUT I listened to the last 911 call, and my blood ran cold. IMO, Cindy's voice is ripe with pain and terror. If it was an act, it was a damn good act -- and it seems to me that if Cindy could act so well, Cindy would have dipped into that talent at some point during the last three weeks.
I don't think Caylee's absence would have really drawn the attention of LE, and if it did, it could have been explained away. Then again, I don't recall exactly what was said regarding Caylee in the first two calls, and it might have been too late to spin a tale there in the third.
But if Cindy was involved in Caylee's disappearance, I have no doubt Casey would have said something long before today. I just can't see her twiddling her thumbs in jail indefinitely out of loyalty to her mother or something. Especially now that charges have been filed, and there's no hope of her being bonded out.