Ok, for starters, She broke Vampire taboo, which you can't do as a new writer. MAYBE stephen king coulda TRIED to do it, but he woulda been blammed for it.
1)Vampires can't go into sunlight without catching fire/exploding/turning to dust
2)Vampires can't fuck. No heartbeat= no blood to get a stiffy
3)If they did get their limp ol' weiner in there, they couldn't get anyone preggers. No blood to keep sperm warm, therefore he's sterile as a fucking anvil.
4)The sun NEVER shines in Forks (the name of the town it takes place in)??? That isn't even an excuse! Vampires immediately become unconscious at the break of dawn.
Feel free to add more!