Derek and Carla

Derek and Carla is a file that can be found in Resident Evil 6. It can be found in Ada Chapter 4.

Transcript
Derek Simmons used countless test subjects in his efforts to "clone" Ada Wong. The main impediment to those efforts was finding subjects with compatible genetic structure.

Using the extensive resources of The Family, Derek learned that one of his own researchers, a Carla Radames, would be a suitable candidate. Derek tricked Carla into taking part in the experiment because she believed Derek valued her and her work too much to risk her. She was wrong, and Derek succeeded in creating the clone of Ada he had desired.

While Carla looked and behaved similar to Ada, there was still a piece of her that remained Carla. Derek's relationship with Ada had only been professional, so he couldn't see that this clone was not the real Ada. Whether through misguided affections or a desire to revenge himself on Ada, he ignored any nagging doubt and began to train and treat Carla as if she were the real Ada Wong.

Carla, having lost most of her personality during the experiment, behaved as Derek wanted. But in the depths of her soul, there was still a spark of Carla's original self, and once it came to the surface, she vowed to destroy Derek, the man who had ruined her life.

Below is a note written by Carla just after she was transformed into Ada Wong. --- I am Simmons' loyal servant, Ada Wong. I will do anything he asks, and in return, he does whatever I ask. We are the perfect match and no one can come between us.

But recently, I can't help but feel some horrible emotion deep down every time I look into his eyes. I don't understand how I could feel this way when we are meant to be together. Some voice is screaming, "Kill him! Destroy his dreams! Don't let him get away with this," and it gets louder every day, but why? What's wrong with me? He loves me so much and I love him back. There's no reason for me to feel any of this. I can't imagine a world without him.

I've given everything to him. I would never want to destroy his dreams. Ever.