Disclaimer: I don't own the Twilight series
AN: I don't expect to be writing a lot for this series, but this idea would NOT leave me alone!
Esme's hair had went from a rich, vibrant brown to a dull honey-blonde over the course of her illness. Her already fair skin had become deathly pale. Her time was running out. "I love you, Carlisle," she said weakly from her deathbed. "More than you can possibly know,"
"I'm not going to let you die," Carlisle told her. "I can do something that will make all your pain go away," he couldn't let her die. He loved her too much. Esme was the first person Carlisle had ever considered making a monster. There was no other choice, he couldn't carry on through the rest of eternity without the woman he had grown to care so much for. "I won't let either you or Edward die," Edward had become like a son to the both of them, he was the reason why Esme became sick.
"You've tried everything already," Esme argued weakly.
"No, I haven't," Carlisle told her. He didn't know what would be worse for him, turning them or losing them. It was a pretty tough call. He walked over to the cot Edward lay sleeping and dying in. "This is going to hurt," he spoke in a soft, pained voice. He then sunk his teeth into Edward's neck, drinking his poisoned, bittersweet blood. It was hard for him to stop. When he pulled away he regretted what he had done, but found consolation in the fact that he had to do it. He'd done it to save him.
As the venom spread throughout Edward's body causing him to convulse against the cot Carlisle made his way over to Esme. She lightly, weakly placed her hand on his cheek. "I'm not afraid," she whispered. Carlisle removed her hand from his cheek and kissed it gently. He had to remind himself that Esme only had minutes left and if he didn't act then, she would be gone forever. He swept her hair away from her neck and sunk his teeth in.
For the long-seeming moments of the venom spreading through their bodies Carlisle felt horrible. He'd succumbed to the monster inside him and it was the ones he loved whose blood he drank. It made him feel sick.
The venom had spread and Edward and Esme's had turned red. Edward broke through the weak wall in a crazed thirst and Esme contemplated following him. Just as she was about to Carlisle caught her by the waist and pulled her back to him before darting off to the forest with her, killing a deer, and introducing her to his way of life.
For the longest time it was just the two of them, until they found Edward again, and taught him of the 'proper' way to be a vampire.
Over the years they gathered Rosalie, Emmett, Alice, Jasper, Bella and their little half-human half-vampire Renesmee.