boy,
Your existing canon fails to allow for a human male to impregnate a vampire female. Therefore, all who has read the original four books knows that what you claim is abundantly false. How your mind could even come up with the faulty logic of your stated reasoning is beyond the understanding of mine.
In addition, there are still many ways to ‘fix’ Beau and Edythe’s regret, without retconing. Afterall ever great story begins with the character having a fundamental flaw that is exposed and destroyed during the novel. Some may say that is still a retcon but that is disagreed with by me. Canon should fail to work surwords-forewords.

