[Chara is not up for an argument, no. But they do agree that it's hard to tell the exact nature of their injuries when they're both covered in dust and blood. Various nicks where Frisk's double must have caught them with their knife and the back of Chara's knee where they were kicked ached. Not to mention the swarm of bruises and scrapes they must have under their clothing after jumping out of a collapsing building. It was a miracle Chara hadn't broken anything on the way down.

Normally Chara would take care of their own injuries in private and keep the focus on Frisk. But that would lead to a debate. So they speak up, tone flat. Answer the question Chara.]

Frisk was kicked around by their double, for how long I do not know. As for myself I likely have cuts from a knife and the back of my knee hurts.

[Nobody needs to know about the end result of their battle with Sans's double, so Chara doesn't say a single thing. But that's the extent of it.]