It was not too large for beauty nor too small for strength.

It curved delightfully, and the lower lip had just the fullness and the color that he liked--to paint, he said to himself.
William, too, was watching Billy's mouth; in fact--though he did not know it--one never was long near Billy without noticing her mouth, if she talked.

William thought it pretty, merry, and charmingly kissable; but just now he wished that it would talk to him, and not to Calderwell any longer.

Cyril--indeed, Cyril was paying little attention to Billy.
He had turned to Aunt Hannah.

To tell the truth, it seemed to Cyril that, after all, Billy was very much like other merry, thoughtless, rather noisy young women, of whom he knew--and disliked--scores.