A few ideas around the theme of twilight but if it was slightly darker.
Edward should have been the one to nearly attack bella in new moon.
Jasper attacking her does make sense, as he has not only had the least amount of time as a vegetarian vampire but I personally think because of his gift he's also feeling all the other vampires desire to drink human blood on top of his own.
But, Edward has such good self control around Bella, you say. He even managed to stop drinking her blood, why would he attack her? you cry.
Well, in this au, in the weeks leading up to Bellas birthday, something nearly happens to her, like a near death experience. She isn't hurt, as naturally edward is there to save her, but Overthinker Edward, convinces himself had he not been around she would have died and decides he must stay with her even more closely than usual. But this means skipping hunting and he thinks this will be tolerable... but on the day of her party, he hasn't fed in weeks so when she cuts herself....
Suddenly there is no careful, protective edward (was there ever?) , there is only a starving inhuman creature ready to slaughter a defenseless terrified girl.
(At least that's how emo eddy thinks of the incident.)
And of course it's doubly dangerous because jasper still loses control so there are TWO vampires trying to snack on her and two are much harder to restrain.
Edward now has the final proof he needs to decide he is truly a soulless monster that should stay away from Bella at any cost, and Bella is still heartbroken by his leaving but at the same time, it's like her bubble has popped. Because she was genuinely so convinced edward would never lose control, or hurt her. Her nightmares are now about edward hurting her. And even if she forgives him, it would always be a thought lurking in the back of her mind wondering if he might snap again. Later on it causes her deep anxiety about being a vampire and meeting charlie again - what if she attacks him the same way?
Bella SHOULD have attacked that hiker as a new vamp. She kills him, Edward is unable to stop her, and by the time he catches up her satin dress is saturated in the blood of an innocent man. I get Meyer wanted Bella to be Not Like Other Vampire Girls so thats why she wrote her with perfect control, but it just makes no sense. Bella with brilliant self control could work but only after that, because she is so traumatised by that murder that from then on she finds the strength to resist human blood from fear of being a monster, like Carlisle.
I'm really just obsessed with the idea of twilight as a darker story that has slight a more horror type undertone. Edward met bella and immediately started plotting all the different ways to eat her. That is SO dark. Like eddy bro thats your future wife she is NOT a sandwich.