The only way it could happen is if Atta was a schizo, and everynow and then he becomes a raving idiot blabbing to everyone; and that at the same time she is so STUPID that she would keep quiet when a person made threatening remarks towards her and Washington DC.
I might accept her lack of intelligence, but i refuse to believe for one moment Atta would be so dumb as to reveal all to someone who could potentially ruin all his plans, and by doing so prevent him from getting his harem of virgins!
He had to keep it secret from everyone, including the majority of the hijackers/terrorists/kamikaze pilots. And these were people he had to trust, at least to the level of taking over the planes. And yet he did not tell most of them everything.
However he would have the temerity to go do this lady, and put himself, his cronies, and his 'mission' in jeopardy? It does not add up!
The only way this could have happened as the lady said it did was if Atta had some sort of subconscious wish to put the mission in jeopardy. Maybe he did not want to die, and the only way he could get out of it was to get arrested (since the alternative would be for him to refuse the mission, and die a horrible death at the hands of some MiddleEastern hitmen a few months later). That is the only scenario where the lady's assertions could be possible.
However i doubt that was the case since these ppl are completely brainwashed, and filled with so much zeal that they are virtual automatons for the terrorist demagogues!
Once this turns out to be a fake someone should tell that lady never again to waste peoples time, and federal resources, on some snipe hunt!