This flash is well made. I did catch that there was something metaphorical going on about halfway through but didn't catch exactly what until I read the description afterward.
My problem with it is that the story pulls no punches at all. At a minimum it should have done something to reveal that "the prince" was Jesus at the end. As is, the list of things that are going to happen is pretty obvious from the moment you see the princess writing a letter, and absolutely nothing happens outside of the default course.
Without ANY particular event to trigger a particular response, the potential for an emotional response that the rest of the story builds up just never comes at all.
As a more minor nitpick, describing Jesus as physically attractive runs counter to the metaphor - following Him is generally not appealing on a superficial level.