You are exactly right, on both counts!  But it does seem to me that what Sister is about here is offering us her understanding of the Scriptures of the day, upon which we are all invited to construct our own theology if we so choose!  Jesus himself loved to use many a warm, fuzzy story and parable to make a point, which is certainly as valid as use of the critical method, and often more engaging to an audience.  As one of my favorite homilists once put it, "A good story is worth a thousand pages of exposition."