I can't understand--" The lady laid down the book she held in her hand, and turned her back on Sir Gilbert.

She crossed the platform, and entered a carriage without looking back.

Sir Gilbert stood stiff and awkward beside the bookstall.
"It's a most extraordinary likeness," he muttered.

"I can't understand why I didn't notice it before.

I can't have ever really looked at her." Then, avoiding the carriage which the lady had entered, he walked further along the platform.