Well, I can't really argue with the unsatisfied emotions of how Bella's change was resolved; my 'Y' chromosome must give me a different perspective
I was thinking last night of the perceived ease in which Bella resists her feeding urges and would like to bring out two points.
1. Bella had a typical newborn reaction to her first scent of human blood and SM did a good job explaining how she was able to shift her focus at that time. Her second experience with a fully human scent was her
father. I would hazard a guess that vampires other than Cullens and Hales have resisted the urge to feed on a loved one.
2. One of the themes throughout the Saga is that free agency, that choice, supersedes nature. Perhaps because it's also an LDS teaching, I noticed it more than some, but it does exist throughout Twilight. Besides the obvious example of the Cullens as a whole, we have the more personal example of Edward during TW, in which he makes the decision not to feed on Bella, despite the thirst. He talks about how he wasn't sure UNTIL he had made that firm decision; his will superseded his nature. This same decision stood him in good stead even during Bella's disastrous birthday party at the start of NM. In stark, and deliberate contrast is Jasper, who struggles with Bella's apparent ease of resistance because he realizes that it is only his own lack of expectation in himself that is causing him the extreme difficulty and that if he expected more of himself, if he made the
decision not to feed on humans any more, that he be as successful as Bella.
Mormons teach abstinence to our youth, teaching that we should wait until marriage. From my observation, those that make the
decision to do so are the ones who achieve that goal. Those who instead expect less of themselves, who
try but are unsure of their ability to resist those natural urges, are the ones who struggle. The same principle applies to vampires.