It puts Harry in the mind of Lady Silence, just a little, because although he's aware such their situation would not have been ideal for developing any kind of romantic connection, he had felt -- and still feels -- very strongly for her. And although they'd come a great distance in their communications, he knows he would never have been tell her how much she meant to him. He can never expect he meant the same to her, however, not a woman like her. The Arctic had been her world and what would they have done together? She'd have never been happy in London.

"I understand," he says softly. "Although, perhaps... you've said you don't think. But you don't know. Not for certain."

Those are different things. And they're both in Darrow. Perhaps it's worth taking a risk.