It's late in the afternoon - nearly dark, shadows as long as they're going to get before the light gives up - when Severus appears, accompanied by a popping noise that Vanessza might find familiar due to her dealings with another of his kind. Severus does not know this woman, but he knows of her, and as he is curious about the current climate but not wanting to get any closer, he's decided to poke his head in over this way to see if there's activity he can observe.

And lo, his instincts are not incorrect.

He doesn't plan to stay long, but he doesn't plan on being useless if he's going to hover. Once he's nudged (bluntly) over to the fellow who could use an alchemist, he ends up drifting over to where Amberdrake is working, his own dark eyes taking in the scene and the triage with an expression of ... bizarre normalcy.