Chara has to stifle laughter at that. They weren't even thinking it until you mentioned it Frisk, but you did good on capsizing that bit because now they can't help it.

"You sure it wasn't, mirror?" they tease, "Seemed like a pretty eye-opening revelation to me."

It's somewhat amazing, how no matter the world or the name, Shifty or Frisk, they manage to so be the same person. This one might be a bit more talkative and flirty than the Shifty they knew, but they otherwise might have been the same person. Chara supposes they should be disoriented by it, but in truth it's comforting.

As for the rest, they take a breath before speaking.

"It's nothing, partner. This is still pretty disorienting, but I figure I'll pick this up pretty quickly. ...Some people, you just can't talk to. They won't give you the chance."

The pause a minute, wondering if they should even say the next part. In the end, what can it hurt. This place is too dangerous not to at least offer it.

"I dunno how many brawls you've seen, partner, but if you ever need any pointers, I can teach you some."