Severus simply stared at her, until a flicker of fear entered his eyes, "You look like him, before he came back, but that's not possible. She disappeared 50 years... ago..." his eyes were confusedly rolling about the room in his dizziness, but thoughts swirled all throughout his wobbly mind. It had been almost of an urban legend among those older Death Eaters who had been loyal to the Dark Lord since his school years, of the missing sister of their Master who had been his balm, his other half who had never much been parted from his side. The girl who had suddenly disappeared the winter of their sixth year of schooling within Hogwarts, and the catalyst of their master just about losing his mind with pain and anger. The start of his obsession with immortality as well. Dumbledore's wariness of her, the girl's familiar name, and her appearance so alike her older brother suddenly made all that much more sense.