The point with a corset is not to make her look good (although she does). The point is to make her feel she is brutally embraced by an overwhelming power. That her body is not hers but an object of desire for her Owner. That she is packaged to please. Of course it shall push her to the maximum of what she can handle as prefection goes. It is not about her, it is about serving and pleasing the eyes of her Master. As always, it is a tool to perfect her. Does she like it? It does not matter. her duty is to please and inspire.