Gadriel had been lurking in the corner--as much as anyone his size can actually succesfully lurk. He needed intel before he made a move out of this place. All he knew so far from his observations is that he was absolutely and in no uncertain terms, not going to touch any of those drinks.

But when the newcomer collapsed to the floor, as though swatted down by an annoyed hand.
He leapt out of the corner, snatching up one of the chairs and striking it against his leg till he was left with a sharp shard of would. They could try to disarm an Ultramarine. Try.

He straddled her body, swinging his ersatz weapon. "Show yourself!" Whatever is slapping people down around here was going to meet its match.