Nina nodded, knowing why Kaz made the decision he did and that decision had nothing to do with chivalry. Except perhaps when it came to Inej. She knew he took his time to decide the options and fell behind her friend.
She had her hands out, ready to cast her power if necessary. She did not like the sounds they encountered. At all. The Grisha muttered, "Saints," as she followed in behind. The sounds made her weary.
The Grisha moved behind Kaz and used her powers to see if she detected any other heartbeats. No. She believed in magic, after all plenty of people called her a witch. But catching sight of something moving up and down the spiral staircase certainly gave even the Grisha pause.
As they entered the side room, Nina whispered, as quietly as possible: "No other heartbeats," and fell back to silence, looking around the room.