The sexual attitude Meyer wants her characters to follow - that is, the attitude the male lead promotes and the female lead complies to

That was not at all my reading of it. An ordinary 17-year old girl manages to stand up to her 90-year old (though looking 17) first boyfriend who is much stronger, smarter, richer and more attractive, effectively bending him to her will. Quite unbelievable, actually. As I mentioned before, Bella is the only real magical character in the whole story.