Casey could have written that entry at any time. She was in and out of the Anthony home a lot during those 31 days. She possibly could have torn out the previous pages during this 31 days and wrote this entry for Cindy to read. I tend to believe that Casey had no problem leaving little cryptic messages for Cindy. She went in and took Caylee's teddy bear... the one Cindy was sleeping with to comfort her while Caylee was gone. Casey was taunting Cindy, in a way... actually, there is no way about it... she was taunting Cindy.
The '03?? Well the only important thing I guess is that it was impossible for this to be written in '03. Cindy even went on Larry King Live and the Diary page was brought up and Cindy states that it was written in 2005... Brad Conway corrects Cindy and says that it was written in 2003. Cindy didn't look very happy with BC when he said that he would be willing to turn it over to the SA. She was shooting him some daggers!!
Conversation starts at 2:43
http://www.youtube.com/watch?v=_l0R65vo2f4&feature=player_detailpage