Title: Petunia's Second Year

Rating: K

Summary: Petunia Evans returns to start her second year at Hogwarts. James and his friends and Lily and Severus are in this story as well. Sequel to Petunia, the Demigod Witch! A crossover of Harry Potter and Percy Jackson!

Disclaimer: I don't own any of Rowling or Riordan's characters and I'm making nothing from this.

Chapter 13: Shock

Thankfully no more monsters attacked during the rest of the holidays and everyone came back the day before term was to begin. Petunia figured the gods had a hand in that, which she was grateful. Petunia had decided to pull a prank on Malfoy and his dumb gang of Slytherin bigots and if it gave him a heart attack, and he died, that would be so much better. Petunia had explained what those three monsters were and Lily hugged her.

"Remind me not to do anything to get visited by them," Severus reasoned.

"So what are you going to do when they get back?" Lily asked.

"Leave that up to me," Petunia told her, with a grin.

Everyone entered the common room, Malfoy and his goons acting as though they owned the place. Malfoy spotted her sister and said, "Your protection is dead! The Dark Lord, don't know where he's at, has killed her."

"Liar," Lily snarled.

"Which means we get to have fun," Bellatrix said and then Petunia appeared, along with her brother.

Everyone screamed and Dumbledore threw the box at Malfoy's feet.

"You were saying," he said.

"Your precious lord is dead," Petunia said, "I killed the most powerful dark wizard in a hundred years. And guess what, Malfoy; things are going to change around here."

"LIAR!" Bellatrix screamed.

"Oh I'm most pleased to say that she's not lying," Dumbledore said and Malfoy opened the box to find the severed head of Tom.

"You're going to pay for this, mudblood," he snarled.

"No, actually, you're going to pay for it," Dumbledore said. "You went to a man that you knew would want to kill someone, just because of their blood. Any child that you have sired will not be allowed to attend Hogwarts. As for you, Mr. Malfoy, Ministry Aurors will be watching your every move until you graduate. I also don't advise that you get any revenge. A power play has happened in this house and Miss Evans has won it."

"And I have declared myself the winner of the spoils of war," Petunia said, "I, Petunia Evans, hereby declare myself the Heir of Slytherin."

The older Slytherins booed but Narcissa screamed, "THAT ENOUGH! I, Narcissa Black, accept Petunia Evans as the Heir of Slytherin."

"I second the motion," Severus said.

"Then it's passed," Dumbledore said and a bright light came through and filled Petunia.

Once it was over she knew that no one would try anything against her. The muggleborns, half-bloods, and those that sided with mortals, would be safe. She vowed that Slytherin House would have a different reputation. During the next Potions lesson Slughorn cornered her.

"Dear, you haven't been to any of the Slug Club meetings," he said, "The savior of the Wizarding world should be around others."

Petunia wished that someone would just kill her.

"Fine, I'll go to one," she promised.

"Great, tonight around seven," he said.

Yes, please kill her.

"So he managed to get you to go to a Slug Club meeting," Narcissa said when she was back in the common room.

"Yeah, and I'm not a fan of them," she said, "But I promised that I would go."

"Tell me all about it when you come back," Lily said.

Petunia grumbled.

When Petunia entered the room everyone turned and looked at her. Almost all of them were jealous. Petunia, of course, knew why. She had no only defeated one of the most evil wizards ever but had invented the Wolfbane Potion. She was also beyond super smart and she wasn't afraid to let everyone know. Within reason!

"There we are," Slughorn said.

Petunia sat down and house elves served them their food. Petunia didn't like house elves but she accepted that they were part of the Wizarding world. However she got up when the drinks were poured.

"What's wrong?" Slughorn asked.

"I'm twelve," she said, "I don't drink wine."

And she left before anyone could stop her.

She shadow traveled to Dumbledore office to report what had happened. He was busy talking to someone so she stayed in the shadows. When the person left she appeared, which didn't startle her brother at all.

"I sensed that you were there," he said.

"I need for you to get onto Slughorn," she said.

"What did he do?" Dumbledore asked.

"He tried to serve me wine," Petunia told him and Dumbledore shook his head.

"I'll take care of him," her brother promised.

"Thanks," Petunia said and she left his office.

She hoped the old goat didn't try to get out of this one.

Petunia decided to head back to the Slytherin common room the 'mortal' way. The whole thing with the wine had unnerved her. Why did Slughorn think that it was okay to allow people that weren't old enough to drink wine? Wait until she told Lily and the others about this. When she entered the common room she found her friends talking. They stopped when she appeared.

"I hope that you three aren't talking about me," Petunia said.

"Of course not," Remus told her, "We were thinking about pranking Potter and his stupid friends."

"Oh let me in on this plan," Petunia said and she joined them.

It was going to be simple. Petunia and Severus, both excellent in Potions, would brew the potion that was needed. Petunia had discovered that Potter and his two little friends had tried to bully Severus and Remus. Oh they were going to pay. How many times did Petunia have to tell them that the three were under her protection? Well it seemed that another lesson was needed.

She then told them about what happened during Slug Club.

"Wait a minute, he's allowing teens to have booze," Lily said, shocked and angry.

"Yeah, but I complained to Dumbledore," Petunia told her.

"And now I wonder something about Dumbledore's thinking," Remus wondered. "I mean, he knows the man drinks and now he hears that he's allowing others to drink."

"Well what can you say, Dumbledore is mental," Severus pointed out.

"That I can agree with," Petunia stated.

During the coming week Potter and his two friends only got worst. If it wasn't Slytherins they were targeting it was others in the other houses. Potter thought it was funny to watch a girl cry because of some prank that they did. Petunia was seeing red and she was going to make them pay.

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A/N: Now Petunia is the Heir of Slytherin under the rules of war.