Why does Stefan . . .
chase her if she has already changed?
sharePerhaps he did not know she was the 'evil' one.
I think Stefan had no intention to kill her. He was angry at her because she was not complying the 'evil side' protocole, (she showed emotions, she was not evil etc)
Was Stefan really a doppelganger? I just wondered if it was really him, but he was freaked out because he suspected Gina was one.
I don't like sticky.