Billy was on edge. It had been only a few hours since he had been abruptly ripped from is place in line at the supermarket and he hadn't stopped feeling he was being followed since. He had shoved his clothes hastily into a small backpack and wolfed out as soon as he noticed the desolation and kept smelling and hearing things just far enough away that he couldn't make them out. Then he did pick up a trail. The trail of someone he knew, He followed immediately and when he got close let out a howl; he knew Molly and thought it was better to have her on edge than completely surprised by him showing up. Less chance of getting some nightmarish illusion thrown at him.
He approached, if she let herself be seen he'd slip behind a tree and human out before signaling to her. And you know, getting some pants on.