The idea that Stephanie looks too tired to show her face on the cover defeats the purpose of selecting her as a cover girl. If you can't show her face, then she's "not fit for purpose". Though now that I have been given the forewarning that she looks tired, when I see the editorial, she will probably not look as bad as I imagine.
But a cover without eye-contact loses a lot of its appeal - it's harder for the cover shot to form a connection with the viewer. We could intellectualise it, but at the same time, the cover is supposed to act as an instant advert for why to buy the issue, and having to appreciate the cover intellectually shows that it hasn't achieved its main aim.