Cousin believes she is an INFJ........

So at first the test gave her INTP then a range from ENTP, INTP, INTJ, all in the span of a few months and now is convinced that she is an INFJ.

The functions are completely different. INTP-ISTP I could understand but how in the hell does an "INFJ" come up after getting primarily INTP-INFP. I told her to read up on the cognitive functions but claims that INFJ is finally the closest one.

I would believe her if it wasn't for that fact that she seems so enamored on the, 1% of the population and rarest type, sentence of the description on INFJ. Anyone who has had this happen to them? Is she really an INFJ or in love with the idea of being one?