Of course Inigo is going to look for Nita. The moment he hears something has happened and that it involved her, he's already on his way to look for her. It's not as easy anymore now the train has grown longer and longer - and he can't find her in some of the more obvious places, like her room - but he isn't giving up until he spots her inside one of the rooms of the quiet car.

Relief immediately appears on his face as he spots her, but as he's about to just enter the room, he realises that maybe Nita doesn't want the company. Even though he's not sure what happened, the way he's briefly heard people talk about it sounded worrying. Maybe she went to a quiet car exactly because she wanted to be alone, and Inigo always sucks at figuring out when to push on and when to leave someone alone.

So he waits outside of the room, waiting until Nita happens to look up and cross his gaze. He gives her a small and slightly uneasy smile, before waving and pointing at the door, as if asking if it's okay for him to come in.