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 11: Petunia's Friends Discovery

Petunia didn't go to the match either against Ravenclaw. Slytherin was playing against Ravenclaw to ensure that they would win the House Cup when term ended. Petunia had made it clear, early on, that she couldn't stand the game. So Lily and the others went to the game and Petunia went to study. This time, however, she didn't go to the library. She was sure that Madam Pince would have locked her out if she ever fought another monster there.

She found a small corner to study and propped open her book. The exams would be here in several months and she wanted to be at the top of her year again. Of course the screaming coming from the match made her glare at the glass. Couldn't they keep it down? The Fates must not be on her side because the game got louder and louder. Finally, giving up, she packed my bag and headed back to the Slytherin common room.

At least down there she wouldn't be bothered. And from the sound of the game it was going to take a long time for it to finish.

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"Let's get going," Lily said, "The Ravens are going to beat our team anyway."

"You're worried about your sister," Remus said.

"Yeah, I'm worried," Lily confessed, "I mean she can do things that I'm sure that not even Dumbledore could."

"She's just a regular witch, Lil," Severus said, "I mean, I know that she's got one year of education over us but that means nothing."

"And Sev I know that something is going on that she's not telling me," Lily argued.

"I think that we should watch her," Remus said. "I mean, if she's hiding something then she should tell her friends."

"Okay," Severus said, shaking his head.

"I'm coming with you," Narcissa said. "This game is dead boring."

The four of them got up and left the pitch, heading back to the castle.

The castle was quiet as they made their way back down to the Slytherin common room. All four of them had a feeling that Petunia would have held up there since it would have been away from the noise of the game. The sound of footsteps was broken by Narcissa hitting her foot on something. She looked down to find 'The Standard Book of Spells: Grade 2" staring at her.

"This is Tuney's book," Lily said, seeing who owned it. "You don't think-."

A roaring sound came through and the four of them ran to the source. As they turned the corner that sound got even louder. Lily was now crying, thinking of all the horrible things that might be happening to her sister. And then they came upon something that looked right out of a nightmare. Two large dogs, larger than any dog that they had seen, was advancing on someone!

"What the-."

Both dogs turned and looked right at them. Lily let out a horrible scream and then both dogs turned to stone and then dust. Lily felt her knees cave in and then, "Lily."

It was Petunia and she had a long sword with her.

"Sister," Lily gasped, hugging her.

"Where the heck did you get a sword from?" Narcissa asked.

"Long story," Petunia answered and then Lily let out another scream. A third large dog appeared and Petunia turned to face it. "Wait here."

They watched as she weaved around the animal, her sword flashing with shining light. Lily gasped as Petunia slammed the sword into the thing and it vanished. She landed, gasping for breath.

"Sis, are you hurt?" Lily asked.

"No, I'm fine," she said, "Damn hellhounds!"

"Sis, what's going on?" Lily asked; her tone filled with worry.

She looked around and said, "Come on, let's talk while we have the chance."

"You're a what?" Remus said, shocked.

Petunia had just told them about demigods, gods, monsters, and that her mum is Hecate.

"Wait a minute, your telling me that there are really twelve Olympians up there on Mt. Olympus," Severus said.

"Correct, but the gods are in the States," Petunia explained, "The gods move with civilization as does places like Mt. Olympus, the Underworld."

"Underworld! You mean, like where Hades is at."

"Correct," Petunia said.

"Okay, so you get your magical powers from Hecate but you could have gone to a magical school in the States."

"True, but there's trouble coming," Petunia said. "And I'm not talking about hellhounds or other monsters. I'm talking about a mortal one. His name is Tom Riddle and he's a butcherer."

"That doesn't sound like a wizarding family."

"His mum was a Gaunt," Petunia said. "His mum died in childbirth and left a monster behind. You see, he was conceived through the use of a love potion. When he was in his sixth year he tracked down his father and his father's family and killed them. Even as his father begged forgiveness for leaving, he had no heart for that. He put his Uncle in Azkaban for that crime and got away with it."

"So he's a half-blood," Severus said.

"Correct," Petunia said. "He's also known as the Dark Lord. This man will use fear, hate for muggles, loneliness, isolation, and the fact that Slytherin is hated. However he has no clue that I'm around. He might be the heir of Slytherin but I'm the sister to the four founders. He cares nothing for others as he cared nothing for his father. He will use, abuse, attack, try to drive insane, all for a vision that's not visible. It's a dream! A world that doesn't exist and can't exist in the real world!"

"What if he finds out that you're around?"

"Then I will battle him, again," Petunia said. "I did it last year and he was driven from the school."

"You battled him," Narcissa said, shocked.

"Correct and destroyed a container called a Horcrux," Petunia said. "He feels that he might be defeated and he wants to be able to come back."

"Dear Merlin, I thought Horcrux were legend."

"Their real," Petunia told them. "I've made a vow that I will be Tom's nightmare and I will protect all four of you and anyone else that needs it."

No one said anything.