During the following days, as things in The Mill started going from bad to worse, he would replay this little moment in the warm October sun again and again. It was that second reconsidering flicker of the taillights he thought of … as if she had recognized him, after all. That’s the cook from Sweetbriar Rose, I’m almost sure. Maybe I ought to—
But maybe was a gulf better men than him had fallen into. If she had reconsidered, everything in his life thereafter would have changed. Because she must have made it out; he never saw the fresh-faced blonde or the dirty old Ford F-150 again.
Question: It was that second reconsidering flicker of the taillights --- In this case, what's the meaning of 'second'?