She's not surprised by his reaction, if anything, that had been the whole idea. She doesn't look back, instead pretending to concentrate on what she was doing rather than him, but she does bend a little more, more than she needs to to look in a briefcase. But Melody is learning, and the smirk on her face is hidden as she 'accidentally' drops something on the floor, turning and bending slowly, all the way, to go and pick it up.