The wonder crossed her mind if perhaps she, too, had altered, grown beyond all his previous conception of her.

Possibly she was as much a stranger to him as he to her.

Was that why he had looked at her with that oddly critical expression?
Was that why he did not now take her in his arms?
Impulsively she took off her hat and turned round to him.
He was looking at her still, and again that awful sense of doubt mastered and possessed her.

A great barrier seemed to have sprung up between them.

He was formidable, actually formidable.