Gu Yun can do their best to restrain the attacker. It won't be too very difficult if they know how to avoid the trashing, this one is likely a civilian. If Gu Yun is unfortunate enough to be in the crossfire then it won't cause more than a few nasty bruises. Maybe a scratch or two. (Sharp nails!) After a while of being restrained, they will calm down naturally.

As for the NPC who is calmer, they will not speak. They don't seem to be able to comprehend that the world around them is moving again. Maybe they're listening... but it is impossible to tell right now.

You will be able to move them to a secondary location as you see fit or leave them both in the room where you found them.