The faintest trace of a smile formed on Anna's lips. "Of course. I made a promise. I always keep my word to you, Dean Winchester", she replied quietly. She closed the distance between them with a boost from her wings and raised the blade above his neck. Could she do it? Could she kill Dean Winchester?
Looking in his eyes, she could see he was no longer Dean Winchester, but a vampire and thirsty for blood, even her own. She had a made a promise; it was more important for her to keep it then anything else. He had killed his brother. He was a vampire and didn't want to live like this. He didn't want to take innocent life. "Good-bye Dean", she said softly and simply. "May you finally find the peace you have been searching for all your life. Maybe someday, we shall meet again." The silvery blade rose in the air and then penetrated the hunter's neck with sickening ease. Her angel strength made it over in seconds, but for Anna, she knew she would never forget. It would haunt her for all eternity.