While listening to this story, I started realizing that the ending was being telegraphed. This left me wondering, "So, when do we get to the part where she turns on him?"
Writing the story in, essentially two parts, his point of view, then her point of view was really the way to go, however I am curious what would have happened to the story if it had been written with the paragraphs going back and forth. So, instead of all of his point of view, then hers, it went back and forth, scene after scene. It might have built more suspense. We would have know very quickly that we were in for a twist (of the knife), but it might have been a bigger build-up that way. Plus, it would have made the story itself feel more like a Stereogram itself.
Nonetheless, I'm going to give the story positive marks.