The Saudis perceive The Rookie as weak. That's no big secret, it's been reported as such on the Saudi state run media.
And as you pointed out, she will be flying directly to Andrews and she and her plane won't be searched, so there are probably a good chance there is going to be secrets coming in with her; be it a classified dossier, money or drugs or a combination of all the three.
Maybe they were going out with her... the rest of the “wiki leaks” which are about to be released right after her trip.