"You don't know what you are talking about.

Look here." He handed across to her the letter received from Giles.
She read it, and said no more.

Could he have seen her write on the wall?
She did not know.

Fate, it seemed, would have it this way, and there was nothing to do but to acquiesce.
It was a few hours after this that Winterborne, who, curiously enough, had NOT perceived Grace writing, was clearing away the tree from the front of South's late dwelling.

He saw Marty standing in her door-way, a slim figure in meagre black, almost without womanly contours as yet.
He went up to her and said, "Marty, why did you write that on my wall last night?
It WAS you, you know." "Because it was the truth.