I'm very intrigued to hear more!
I, too, am leaning towards an accidental death and no use of chloroform on Caylee by KC.
To those who think one can't explain her actions afterwards in such a case, sure you can -- in this scenario, she's still the same narcissistic, immature person. She wasn't caring for her child because she didn't care to, and if the child died, she cared more about what her mother would say and the fight that would happen and all the problems it would cause for her own new plans than about her own self. So, after a few moments of panic, she realized that Caylee was dead, and she didn't want any consequences from it (esp. from her mother), so she moved on. She's still a very sick person in the accidental death scenario.
Like I said, I'm only leaning this way, my personal jury is still divided.