I believe that KC had been using xanex (Zanny) as the "babysitter" in the past.
I believe that KC had bigger and better plans, so to speak, and Caylee wasn't part of them.
In May, I believe it was, didn't she communicate to Amy about how she could put all her "stuff" in her parents' room, plenty of storage, etc.?
In May, wasn't there a change of address for Amy to the Hopespring location? (I believe CA spoke of it in her interview. For whatever that's worth.) Easily verifyable through the post office.
Didn't Amy wake up one morning in different clothes and money was missing? (I believe that was KC's first test of chloroform.)
I believe that she Chloroformed Caylee the afternoon of the 16th in order to meet with TonE, who had already told her that the child would be an issue. Put her to sleep, just as she did Amy. She saw Amy awakened, had no reason to think Caylee wouldn't. Off we go to Blockbuster to rent movies.
Problem is...she left the chloro rag (and perhaps the chloro) in the trunk with little Caylee after little Caylee was knocked out.
The poor baby was dead by morning. KC didn't discover that until whatever time she got up.
I think that Caylee was only the first part of KC's plan, but it didn't work quite as planned. I think ultimately she was going to kill GA and CA as well, (my stuff in parents' room, plenty of storage) and Caylee was the first step in that plan.
I just think that part 1 of her plan, (Caylee) happened before she expected or planned for. Planning backfired.
Begin self-preservation and hang on to the "Oh S**t handle" because it's going to be quite a ride.
I believe Caylee was killed on the night of the 16th and removed two days later. There is no way KC would handle a body much more decomposed than that, especially in the Florida heat and humidity. No way.
I wish I could remember the date she borrowed the shovel.