Normally stocks have been constructed to maintain a person standing upright, but today PD has determined that he needs Mei Mara to remain on her knees. More than this, he needs the position to be as uncomfortable as possible. Keeping her mind shifted the way it’s lets her see just enough of this room to be aware of how much trouble she’s in. This vantage point is not any type of advantage. It simply demonstrates her that she has very excellent reasons to be somewhat afraid.