I've known them to stick around for a month or more." She sat very silent, and for a time did not even move her lips.

Stealing a swift glance at her, expecting to see a worried light in her eyes, Lawler noted that there was a slight--a very slight smile on her lips.
He was amazed, incredulous, and he stole another glance at her to make certain.

There was no denying it--there was a smile in the eyes that were gazing meditatively past him into the fire; a smile on her lips--giving him proof that the prospect of remaining alone in the cabin with him had not crushed her--had not brought the hysterical protests that he had feared.

She was plainly pleased, possibly considering the thing an adventure which would have no damaging consequences.
With a malice in his eyes that she did not see--for he looked gravely at her, he said, slowly: "Listen, Miss Wharton!" He raised a hand and looked at the north window.

Following his gaze she saw the snow whipping against the glass, rattling against the panes like small hailstones hurled with frightful velocity.