Timeline: During Graduation Day Pt. 2 when Buffy sees Faith in the coma.

Non-Guilt

Faith was a traitor, in every meaning of the word. But as I looked down at her, almost dead because of me, I couldn't help feeling sorry for what I had done to her. Angel needed her blood, but I couldn't help thinking by doing... that to her I had almost become her, a killer.

I move a lock of her hair out of her face. I know it doesn't matter; no one cares what someone in a coma looks like. But it seems important that I do something for her. After all, I as good as took her life.