Her story is completely nonsensical, she's an awful liar. Or, is pretending to be an awful liar. Perhaps she's clever and is pretending to be a hapless rube,

Her story is completely nonsensical, she's an awful liar. Or, is pretending to be an awful liar. Perhaps she's clever and is pretending to be a hapless rube, in an effort to diminish her perceived culpability. With spy shit like this, either is a possibility.