Bellatrix gave him a genuine smile then. "That would be so great of you," she said, biting her lip with excitement. Not that it would make much of a difference in the scheme of things, the girl would be just as dead, but the knowledge that she could partake in the girl's fear, have participated in it, made her truly happy. To think she hadn't even intended on apprising Greyback of that bit of news when she had originally found him.
Then something else occurred to her. "Have you heard of ghosts becoming... real?" she asked, a bit vaguely. For that was how it had felt, the few seconds others had become afraid - the shagging children, the old professor - the sensation she had felt overcome her had felt very much like having a body once again. Perhaps she was correct in her assumption that there was a correlation to be had. Perhaps she was not, but it was always worth another try!