This is new for him, being in a building like this. The ride here has been long and he’s been alert for Rosie’s distress, but she exudes only a sense of determination, which is new for her. There are nerves, yes, but there is something else that keeps them in check. That, and his sturdy presence at her side.
The sounds from behind the door are different, too. He doesn’t know why Rosie doesn’t just open the door, but people have odd customs. He thinks he might bark, as he would to be let into their house, but something tells him not to. He, like Rosie, waits outside the closed door. Unlike Rosie, he can hear the carpet-dulled approach of rubber wheels.