The first question is, how did she ever get a security clearance to begin with?
Because Obama did not believe in anything being 'secret' or 'covert', he and his staff were granting Top Secret clearances to everyone with a pulse, including members of his clan, the Muslim Brotherhood.
During Obama, it was actually more difficult to fail a security screen than it was to pass. This how Wasserman-Schultz wound up hiring a group of Muslim Pakistani spies as her congressional IT staff. And, this is how this person who obviously has some serious psychological issues, wound up in a position to do what she did.