Here's Chapter 51 of Weirdness at Waverly Academy. Today, Nancy confronts Mel.
Nancy opened the door to her room, and she noticed a piece of paper on the floor. It had a cat pawprint on it, complete with a note reading Go back to France.
"Hey, guess who just got a note from the Black Cat?" Nancy asked.
"Congratulations," Corine said. "Just don't go all Danielle on me, okay? Stay away from food closets."
Nancy laughed weakly. Making jokes about someone who was sent to a psychiatric ward seemed rather cruel. After all, Nancy figured that if she was locked overnight in the Safety Hazard Supply Closet, she'd come out with mental issues, too.
Nancy made her way outside of the building, going to the large oak tree. She was hoping to find some evidence about the mysterious group that met by the tree at midnight. Sadly, the lightly falling snow covered up all the evidence that could have been there.
Wait a minute... Nancy thought.
Reaching into the snow, Nancy pulled out a purple-and-black barrette. There was only one person in Waverly Academy who would wear that much black and purple.
Nancy made a beeline straight for Mel Corbalis' pink-flavored room.
"Hey, Pinkie Pie!" Nancy said. "Look, I—"
"Well, if it isn't the girl with the fake name," Mel said loudly.
"Shhhh!" Nancy said, checking to make sure the door was shut. "Don't...don't say that out loud!"
Mel scowled at Nancy. "You don't want people to find out the truth, do you?" she asked.
"That's not it!" Nancy said. "The whole Nancy Drew thing...that was just a joke!"
"So you're not really an undercover detective?" Mel asked.
"Guh..." Nancy said.
"You can't fool me," Mel said. "I looked you up online. You're quite the detective, aren't you? You've solved mysteries all over the world."
"Yeah..." Nancy admitted. "The headmistress wanted me to come here to find the Black Cat."
"I see," Mel said. "And what have you found so far, Little Miss Sleuth?"
"I found this," Nancy said dramatically, taking out Mel's barrette.
"My barrette?" Mel asked. "What's so important about that?"
Nancy went into her Genius Detective Mode.
"I found it in the snow, next to the oak tree," Nancy said. "Judging from the amount of snow left on it, and based off the meteorological patterns of this area, I can safely determine that it was dropped around midnight. Meaning you were at the oak tree at midnight.
"It took me a while to analyze the footprints," Nancy continued. "As far as I can tell, there were probably six people there. But most of the prints were wiped away by some kind of heavy fabric. They matched with the fibers on the barrette, which leads me to conclude that they were part of the same outfit.
"Cloaks, in fact. You were wearing heavy cloaks, which dragged on the ground, partially erasing the footprints. And you must have been wearing them with the hoods up, because it knocked your barrette off when you took the hood off."
"That...that's amazing," Mel said, impressed. "Wow! You've been playing dumb this whole time, when you can analyze everything like a pro!"
"Not really," Nancy said. "You guys were making noise last night, so I looked out the window and saw you."
"Oh," Mel said. "That makes more sense."