I would join her, and find out if she had heard.

But I was too late.

As I stepped into the hall I saw her disappearing round the corner leading to her own room.

This convinced me that she had heard nothing, and, light of heart once more, I went back to my own room, where I collected such little articles as I needed for the expedition before me.
"I had hardly done this when I heard the servants on the walk outside, then Arthur going down.

The impulse to see and speak to him again was irresistible.