Not interpet, but structure my own. Many of the interpretations of Jungian typology contained sinister errors such as for instance the MBTI denotation of J, which shows that the only Judging types are the Extroverted Judging types. Clearly, judgment is both Introverted and Extroverted. It is also the case that Jung did not say all that needs to be said about typology. Hence, in order to get satisfactory results with regard to this subject one cannot merely interpret theory, whether the theory is Jung's or that of the current writers. One must do his own thinking.
If it is a good theory, it shall be confirmed by empirical investigation. Granted that the empirical investigation has been conducted properly. If in theory you say that if you drop a stone from a high building, it will fall, and if it is a good theory, there is no reason at all why when you go to test this out, the stone will not fall from the building.
I also had plenty of experiences with INFPs. I am around them all the time and have been for the past few years. But I hope that you will wish to have more of such experiences than I do after you have had some of them.