She is so scripted and coached, it's ridiculous.
I wish I had a link to get the exact wording of what she said but I saw a videotape (broaddcast on Fox) of Ms. Sheehan speaking before the People Of The Ditch down in Crawford. The quote was something like:
"When the history books are written about the anti-war movement, you can say that you came to Camp Casey and saw Casey's mom."
Not exactly the cries of a grieving mom, is it? That one quote goes further to show her true motivations- she craves recognition and the spotlight- far more than anything else I've seen or read.