How he got home, Severus just couldn't say. But what an awful nightmare- imagine an old schoolmate risen from the dead to pull you back to the past! He yanked his quilt over his head and shut his eyes tight.
DONG. DONG. Two short, simple tolls of the bells that sounded a lifetime. Cold air seeped into the cracks of the room, from the windows, floorboards, ceiling, and all around the old house, creating a forceful wind which blew aside the bedsheets for a second time.
Rather than haunting, tormenting calls, giggles filled his head as his eyes were forced open. Before him was a girl, laughing, smirking, as girls do- but she was different; pale, translucent, and forlorn as his past visitor had appeared. But so young...
"Picture a professor wearing a nightdress", she snickered. "Ah, if only I were alive...what a laugh I could have...oh, a real laugh..." she sniffed and latched onto his arm with a shaky but certain grip.
Severus widened his eyes, his paranoia and fear being self-diluted in attempt to keep his sanity- some of it, at least. He'd simply deny this was happening! With a nervous chuckle, he said to the spirit-
"So, where are we riding off to this time, dear?"
In an instant, Myrtle was right at his face.
"You won't call me that. You WON'T!" she sobbed, flying straight out the window, dragging behind her a dazed and reluctant man.