"Not yet, no. But try not responding, and see if you start to notice something when you are not in my immediate vicinity." He opened the door and stepped back into the hallway, still watching her. "For the sake of science, see how long you can comfortably ignore it. If you need to find me, you can activate the portkey by touching the collar and saying "I’m ready to serve my master’. I’m going to change into regular clothes and then get some work done in my lab. Take your time, feel free to transfigure the robe into whatever you’d like to wear, and feel free to make yourself at home. Oh, and please eat more if you’re still hungry. Help yourself to anything in the kitchen." 