[Ariadne's smile took a more serious tone as she saw him using the notebook.]

A room that could grow if more people needed a place to stay.

[It made sense to her, considering what she'd heard about the Barge growing when more people came onboard.]

If the Barge can ---

[She paused, hearing the rattling as she stared at him. Oh great. She carefully got to her feet and glanced around, trying to finish her sentence.]

If the Barge can do it, so could your room.

[She was near a shout, trying to speak over the steady rumble of an approaching train.]