Either way, he knew there was no way he could just turn around and leave.
"Professor Snape?" he asked as he rounded the rocky ledge.
Severus spun around and nearly dropped the vial of purple pods he was clutching in one hand. It was utterly impossible to think the person in front of him was Harry Potter, and yet it had clearly called him by name. In any case, real or imagined, he wanted nothing to do with it: his life was his own, now, and any interaction with Potter was . Recovering himself, Severus lowered his brows into the most menacing scowl he could manage after nearly a year without practice.
"Help?" he spat. "You've done quite enough for a lifetime already." He moved forward, intending to stalk by Potter on the most direct route back to the road, but his footing wasn't as sure on the rocks as he would have liked, and he was sure the resulting picture - as he picked his way carefully over the sharp rocks - was not nearly as dignified as he meant it to be.
It seems that there's something missing here. Was Harry supposed to offer Snape help?