It is relatively easy when one has been trained in self-hypnosis to beat even a comprehensive polygraph test. Ford has had such training.
The two-question "test" given to Ford was a bad joke, intended for her to pass. A real test would have had a lot more questions and would have been done in a very different setting. It would still be inconclusive too.
The real trick in a polygraph test is to persuade the subject that they must confess before their deception is detected. That works on most people.
Cheating on her boyfriend and fraudulent use of the credit card are more indicators of sociopathy.
It was also either on or around the time of a funeral she attended and as Rachel Mitchell’s report said, it is wholly inappropriate to administer a polygraph to someone who is grieving. Perhaps that was done by design?