[ First of all, it's a brilliant nickname.

Kara frowns and looks down at her hands. She can't see anything, but the blood is dried and dark, staining the blue of her sleeves almost black. She rubs her hands together, trying to wipe away a stain she can't see, before looking back up at him. ]

Right. Is there a reason I can't see? Like did we stumble on some weird scifi version of Macbeth or-- Wait, does that mean you can't see yours?