"I don't suppose it's your birthday," Severus muttered, shouldering his way inside, with or without an invitation. He dragged the girl along, stifling a satisfied smile. At least he'd chosen something appropriately appealing. "No occasion. We could all use a little cheering up, after recent events. I found her on the way over, and thought I might as well not waste my good fortune. I imagine she's a local. Not one of your neighbors?"