te might want to read the following articolo that discusses Stephenie Meyer's Vampire Mythology
"In relation to this same issue, why is it that only male Vampiri#From Dracula to Buffy... and all creatures of the night in between. can reproduce, while female Vampiri#From Dracula to Buffy... and all creatures of the night in between. cannot? o could it be that it’s possible for a human male to impregnate a female vampire?"
link