[Tony looks offended when Bucky laughs. As usual, he's sensitive and tries to salvage his pride.]

When she hatched, I thought this might all be some kind of bad dream. A crazy hallucination or trick. I couldn't be sure she was real.

[So he manhandled her and she took exception. The careful way he supports her without closing his hand says he learned his lesson about grabbing a serpent. Nightlight cautiously glides toward the other pair. It's clear she's curious, with her small head tilting to examine them and her neck extended to get close without touching. Finally, she makes a small chirping noise.]

I guess that means she likes you.

[Because she can feel Tony's happiness at seeing Bucky alive.]