Once Kennedy had started to feed, she could have no more stopped upon realizing someone was watching than she could have suddenly decided to turn into a rabbit and get a new job as a magician's assistant. She barely managed to avoid getting blood on her magic shawl as she ate. The first time she'd fed had been a blur; she couldn't remember anything except catching the scent of the child on the air and then coming back to herself after the deed had been done. She wasn't as lucky the more she did it; half of her was occupied with not getting sick at the thought of what she was doing, and the other half was busy eating like it was the best meal she'd had to eat all year. And, if she was honest with herself, it was. She could feel her strength growing with every bite.
As it happened, she didn't realize she had an audience until she was nearly done with the whole meal. She ate neatly but quickly, a look of discomfort and pleasure mingled on her face - she didn't want to be doing it, but god was it good. She ate everything - skin, fat, muscle, organs, leaving only tiny bones behind her. She had been focused on her meal, but looked up and around just as she was popping two tiny kidneys in her mouth, the last bit of tissue left to consume.
"Ah, Christ," she muttered when she spotted him with a guilty start of surprise. Flee? Brazen it out? Deal with what were surely uncomfortable questions? If he'd already recognized her, running away wouldn't do a damn bit of good, so Kennedy merely laid the wet bones of her meal back in the stroller and straightened out. She was red halfway to each wrist; there wasn't really any hiding what she'd done. But still... "How long have you been standing there?"