I try to see the evidence behind this whole mess being an accident, and am usually successful in terms of being able to say "Yeah, maybe she's not like your average person..."
But that aside, there's too much to reconcile. You can explain the duct tape by thinking "Well, the leakage and the tongue would make it too much to bear."
Then you can say "Well, she didn't call 911 in a frantic, desperate hope to revive her daughter, because she forgot Caylee in the trunk and she was already stiff and cold."
So, after that, you can be all "Alright, she didn't tell anyone because she was controlled and intimidated by her mother, and the truth would be worse than prison."
You can look at the Fusian pics and her IMs and her texts and say "She just broke. Something broke in her head and she believed her own story."
Then all the stuff with LE and the tour of Universal and the fake nanny, friends, and life can just be brought back to her fear of her parents' reaction.
What I can't reconcile, however, is all of those things together. I think we have to be quite generous to give her that much benefit of the doubt, IMHO. Call it Occam's Razor or looking for horses instead of zebras, but unexplained Google searches before a child isn't reported missing for 31 days, combined with more lies than one can count, decomp evidence in a trunk that was never reported stolen, tape over the mouth of the recovered body, and an armchair psychologist's textbook picture of both narcissism and antisocial personality disorder?
A fish can go belly up in its bowl. You can find a hamster stiff in its cage one morning. You have an almost three year old little girl who winds up dead on her mother's watch and the mother acts not torn up, but in the best case, apathetic. I'd probably go as far to say relieved.
To me, that points to murder. This would have stopped being an accident (at least perjoratively) as soon as KC made the decision not to come forward. Her burying Caylee in that pet cemetery means nothing more to me than that Caylee held no more significance to her than a dead betta fish.
All MHO, obviously.