Perhaps the dream-- Dowie was a little awed.

Was he with her?
In obedience to a weird impulse she always opened a window in the Tower room every night before going to bed.

She had left it open to-night.
It was still open when she entered the room herself.
There was nothing unusual in the aspect of the place but that Robin was there and it was just midnight.

She was not walking in her sleep.

She was awake and standing by the table with the pamphlet in her hand.
"I couldn't go to sleep," she said.