That pause and eyes lingering on her horns is noticed, though she doesn't take offense at his surprise. Korrin's kind aren't very numerous in the area, so they tend to stand out. If she took offense every time someone was caught by surprise, she wouldn't have time for anything else. So, she responds calmly.

"I don't know, are you still offering? Yes, I'm 'qunari'. More accurately a Vashoth. I have nothing to do with the Qun."