It's a start, but a pretty weak one. There are things she can infer for the time being that will help narrow the search down; the killer was almost certainly young and trying to curry favor with the new leader by way of a shortcut, he wasn't too smart and he didn't have any position to speak of at the moment, and he may be claiming credit for it otherwise what was the point?

That probably described a lot of young vampires right now, though.

"Campfire smoke?" she repeats, a faint frown puckering her brow. "You're sure?"