the lie detector test that shows Ford is telling the truth.
There is no such thing as a "lie detector" test.
A polygraph measures certain stress factors, such as pulse and respiration.
When people are lying, those show stress associated with lying.
However, if a person truly believes what they are saying, a polygraph wont show stress.
So, if you truly believe the sky is green with yellow polka dots, a polygraoh machine wont show the stress associated with lying.
So if she truly believes she is telling the truth, then thats what the polygraph will show. That doesnt mean she is telling the truth, it only means she believes she is.