She pretends that she doesn't notice the tear, though she's sure that he knows that she knows and - so on. He's a tough guy, for pity's sake, and the fact that he didn't push her away and isn't yelling at her - or, worse, laughing at her - is a bonus.
"Thanks," she says about the song, and rubs her hands over her face because she's tired, not because it is slightly damp. "And... I figured you didn't. You're the Captain. Where do you go to just... let go?" She gives his hand a squeeze back. "You'd have been fine and soldiered on, because that's what you do. I, um, recognize the type."
Kitty smiles. "But... I'm glad I was around, you know?"