“So, hold on. You said you don’t know what my armor’s made out of?”
She gives you a strange look.
“It’s clearly not metal, but it doesn’t look like leather either,” she says. “You do look to have some sort of leather reinforcing it in key points – not from any creature I recognize, though. Also looks like the focus is on mobility more than protection, but it tries to fit in whatever protection it can. You seriously mean to tell me that’s just a costume?”
Now you can lead this a little bit.
“Well, I don’t know where we got it. Could have come from an armorsmith, I suppose. Maybe they were making it for, I dunno, the navy? It’s waterproof, and if it’s meant for mobility, they might have meant it to be for fighting in the ocean.”
She looks momentarily concerned, then regains herself.
“Don’t see it working unless you had an enemy with the same suit. There’s no way it’d last against a shark, and if the merfolk were real, they’d easily outmaneuver a clumsy human in a suit.”
Hmm. You think you might have seen a tiny reaction there, but not much of one.
“Maybe that’s why the smith ended up selling it to an acting troupe instead of the navy, then,” you say with a shrug. “I couldn’t say. On the other hand, I don’t know if it’d go the way you suggest if the human was a real good swimmer.”
“If a human could swim that well, I’d suspect them of having merfolk blood,” the woman says. And you definitely got a sense she was trying not to visibly react there.
Now if only you knew where you were going with this.