People have a proclivity, when given sensible orders, to follow them. To test their obedience, you must give them insensible orders - only if they follow those will you know you have control.
To everyone else, the world is full of junk, meaningless, empty, broken things. But to Nina, every shape, every colour, texture, smell, they all tell a story, they're all worth treasuring. I wouldn't wish what she has on anyone, but every now and then I get a glimpse of what she sees...