Kim cared about what she ate in the sense that it irked her that she began to notice a small amount of pudge on her otherwise meticulously taken care of body. She didn't bat an eyelash at the blood. The threats bothered her only on a level in which her vanity and pride were injured. Being watched, however, caused her stomach to turn. She grew paranoid, the the only physical sign of such was her glancing at the camera, especially before she slept.