You are an Umbrella experiment, they did tests on you, you were mistreated for several years.

The DSO managed to capture you they put you in a room you had a bed and the rest of the room was empty, one of the agents, Leon Kennedy came and looked through the windows with Hunnigan

“Mm, we should help her” Leon said looking at you attentively with his piercing blue eyes, you were scared so you were aggressive.