They are looking for proof documents regarding what happened in Benghazi that Petraeus may have given her for safekeeping. There is no way they would be going to her house tonight looking for sex documents. The admin is in panic mode.
Its starting to look like Operation Hummingbird in slow motion.
Also, my take is they may be looking for ANY dirt at all they can find on Petraeus/Broadwell.
Whenever an accusation used to be flung at the Clintons they would fling any and all dirt right back...most unrelated but it still sticks.