Tears were rolling down of Stefan’s eyes. She was his everything and he couldn’t protect her, Katherine kidnapped and tortured her but he didn’t notice because he was too busy babysitting Damon and Humanityless Elena. Now he was looking at her seemingly lifeless body, sobbing. He knew she was a siphoner but she didn’t have any vampire blood in her sistem (or so he thought) so she couldn’t have turned into a vampire.