Jacob considered, he knew the tone, understood the unasked question, the unvoiced invitation to continue talking, and he considered. She might be a student, but then again, it was becoming more and more apparent that she was a Slytherin, either that or family lines had changed drastically in the last forty years. It had been a long time since he'd had a proper conversation with someone - and student or not this young woman might just be able to be capable of such a feat.
All of these thoughts passed through his mind in just a mere second and Jacob fell into step with her easily as they walked. He didn't have anything else to do that afternoon as it was, and the prospect of a proper conversation was something he found hard to resist. "And where are you off to next, if you don't mind my asking?"