I not fully convinced that she killed her daughter, but I do think she's withholding information. I also believe that the grandmother is protecting her. I just read on CNN.com the grandmother's interview with Larry King, and I find it kind of odd that she seems to have recanted her idea that her daughter may have been partly responsible. Maybe she was upset that night, maybe the media has blown things out of proportion, but the whole situation still seems very ODD.
I do know one thing I'm convinced of, and that's that Caylee is dead. Thirty-one days and no one has seen her? Now that she's all over the national news, whoever had her won't risk being caught with her. She's gone.