[She did store the original away safely, so that'll be a little surprise for her at some point in future, finding it's gone. Ari holds what she thinks is the second one, and speaks almost conversationally, as if she thinks he's standing right behind that door. She trusts he'll hear her, regardless.]

It's a unique calling card, I'll give you that. But I know you've met with your other captives [she's not going to sugarcoat it] so am I to conclude that you're too nervous to talk to me? I've met a lot of captains, and that's not very captainly behavior, hiding away on the bridge.

[Of course she knows by now that he's not physically threatened by her. He has the power of life and death, in a much more literal fashion than any ordinary captain. Yet there are other reasons a person could be nervous - so she's going to poke at it.]