"Ah, I'm nobody suspicious."

Oanna raises an open hand, as if to indicate that she isn't holding any weapons. Her other arm ends just past the elbow, so she's probably not hiding a dagger there, either. Down to just the innermost layer of her robes, she was planning to drop that too, but probably better to make sure there's no bad blood before getting naked.

"I just wanted to escape the heat for a bit. I can come back later if it's a bad time."