Cindy's MySpace blog entry was on July 3rd, and at that time she was lamenting the fact that she had paid for food, shelter, medical, and all expenses, and now, through jealousy, her beloved granddaughter was missing.
I've always felt that this blog entry by Cindy was the truth and points to tension between Cindy and Casey in regards to Caylee. The jealousy becomes a factor when you consider a tug-of-war between Casey and her mother over Caylee. Clearly, if Casey was spending all her time out with friends, partying, she wasn't caring for Caylee - her parents were, and Caylee may have begun to call Cindy, "mommy", and Casey was angry and jealous over the bond between her daughter Caylee and her mother Cindy.
Casey storms out of the house on June 16th, taking Caylee with her, or with what we now know in retrospect, did something to Caylee.
By July 3rd Cindy hadn't seen or talked to Caylee in more than two weeks and she was hurt by what she perceived as Casey withholding Caylee to punish her. At that point, she was completely unaware that Caylee was not just missing from HER life, she was missing altogether.
When you couple this blog entry with the third 911 call, you can see that Cindy has just put two and two together and realized........."Caylee is not just missing from my life.......she's gone!"