I have thought long and hard about "what happened to Caylee" and the only plausible theory/explanation I can come up with is this was a rage killing.
First, ICA left the house on June 16th telling her father she would be gone all evening and that they (she and Caylee) would be sleeping at "Zannys." We all know there wasn't a Zanny. So where on earth was Caylee sleeping June 16th? TL states he didn't feel comfortable with Caylee hanging out at his house because of the environment, CA was working late, GA was working, and no friends of ICA came forward stating ICA asked if they would watch Caylee. So who was watching Caylee?
Second, the "flury" of calls, I believe, were a made up Zanny excuse as to why she couldn't babysit that evening. ICA was prob calling CA/GA stating Zanny had been in an accident, won a lottery (lol), or some other made up lie and she needed a babysitter. Also, why didn't CA take the calls? At one point she talked to a counselor who told her she should get custody of Caylee (we dont know what she said but must of been pretty bad for a counselor to recommend that) and didn't she tell an old friend of ICA's that she was a psychopath and to stay away from her? So, why didn't she take her calls (her granddaughter is in the care of a "psychopath" right? IMO CA knew why she was calling! ICA prob called her with excuses like this all the time but this time CA put her foot down because stealing money from grandma was the last straw.
Now, in a rage ICA smothers Caylee because nobody was getting in the way of her date with TL! She places Caylee in her car and goes out. The next afternoon she goes back home, puts Caylee in the backyard, and borrows a shovel intending to bury her. She discovers its not easy digging a hole and puts Caylee back in her car until GA and the gas can fiasco. In a rush she throws Caylee out like trash w/duct tape on her mouth to look like a kidnapping.
IMO chloroform searches were related to her parents or friends. I believe she was going to use it to steal from them, possibly stage an accident and off her parents. She probably stored the chloroform in her car = high levels.
"The most difficult thing is the decision to act, the rest is merely tenacity. The fears are paper tigers. You can do anything you decide to do. You can act to change and control your life; and the procedure, and the process is its own reward." Amelia Earhart