It wasn't any different from having Innocence pointed at him at this very moment. He was very normal and very susceptible to being harmed as any other human or creature in this snowed in town. So when that sharp stick is lifted in the darkness his hand is moving up reflexively. No Dark Matter appears in his hand but that shard of glass is held tightly against his hand. It doesn't get very far and he actually lowers it with a sly smile spreading across his lips.

"I want the fire and I don't think backing off would be in my favor. You see, I want to be just as warm as you do and I would prefer if you lit it already. I understand if you don't know how..." Allen would at least be willing to banter back at him. The snark was wasted on the swordsman and yet he couldn't help himself. He wasn't in any real mood to spar right now.