Yes, it's certainly an unusual, and not especially flattering representation of the late Princess.
Talking of eyes that follow you round, when I was at Junior School, we had various prints by old masters, adorning the walls of the dining room, many of them portraits. I remember one in particular, whose eyes always seemed to be boring straight through you. He had a somewhat contemptuous look on his face, as though he was thinking of the person he was looking at as a complete idiot. I always imagined him saying, "Seriously, how can you eat that rubbish?"
Happy days.