As much as I hate to say anything in her defense, in her phone call home from jail, she blasts the media for 'misconstruing things', and the police for 'not bleeping listening to anything' she says. I'm not sure if any of that applies to the date, though, but she did say '31 days' from the "beginning" (2nd 911 call). Being in jail, I'm not sure how she was supposed to correct or stop the misinformation at that point, or if it'd have made a difference if she did, given the lack of credibility was already so large on her part.