This analysis is completely delicious!
If we stop looking for meaning when we acknowledge the superficial Mary Sue story contained in Twilight, we will miss the particular twist that Meyer gives her version: the deeper spiritual transformation and apotheosis aspects, the God-Man Everyman Drama. It is not enough for Bella to be transformed into a god-like vampire with superpowers that enable her to stop a vampire war before it starts. That was merely a pit stop on the way to Bella’s true moment of glory: when she achieves complete unity with her mate for the first time.
Earlier in the book we read of Bella enjoying the delights of sexual intimacy with her husband, but this was not the union that the books moved towards, either. The climactic unity is essentially cerebral rather than sexual, a blending of minds between wife and husband. Breaking Dawn is not only a Hero’s Journey to god-like Mormon-ish Vampire, but also an apotheosis to exemplary Mormon Wife. If we are to interpret Meyer’s novel as a Mary Sue composition, it must be recognized that Meyer’s heroine has found only partial fulfillment firstly as inaugural vampire mother and secondly as supreme vampire shield-protector; but she finds complete fulfillment as a wife who is fully united, of one mind, with her husband.