It is possible that Hopper omitted these reflections in order to avoid distractions that might turn the viewer's away from the woman. Strand, however, suggests an alternative reason why the woman's reflection is omitted:
It is conceivable that Hopper omitted these reflections in order to minimize visual clutter and maintain the viewer's attention on the woman. Conversely, Strand proposes an alternative explanation for the absence of the woman's reflection: