Nina knew her role in the Crows: charmer, flirt, distractor, Grisha. Not necessarily in that order, but close enough.
She made notes of everything he said and planned on telling Kaz as soon as she left. "Oh, that must be noisy. Or do they only speak when you want to listen?" A lot of animals lived here and she wondered how much silence he got to enjoy. Nina never felt powerless, but she didn't love the powers in one person.
"Oh. Sure?" The Grisha smiled, albeit with a bit of trepidation, not knowing what to expect.