My Two Ada's

I've been a fan of Resident Evil from back in the day, and the character of Ada Wong had always intrigue me, after playing Resident Evil 6 and learning about Carla, I decided to make a story based on these two characters. In this story they are twins and you'll notice the tie in to some familiar places from the RE Game series mainly RE2,4, and 6, also this fic is a little more MA