Rose Potter and the Boy-Who-Lived
A crossover between The Adventures of Rose Potter and canon Harry Potter. Spoilers up to and including Goblet of Fire, there might be references to the other books. Obviously, spoilers for the whole of The Adventures of Rose Potter, which you should read first. NO HORCRUXES
by coolhacker1025
Chapter 1: Entering Harry's World
Rose Potter found herself in an unusual situation. She had gone to bed, and woke up some place different. As she awakened and got her bearings, the location was even more unusual.
She was at Hogwarts. Rather, she was in the forest outside of Hogwarts.
I have to get out of here quickly, she thought, knowing the dangers that lurked in the forest. She looked up at the sky. At least it's not a full moon.
She walked towards the entrance to the forest, and noticed someone.
"Mum?" asked a boy. As Rose looked closer, she realised that the boy resembled someone she'd only ever seen in photographs—her father.
"No, I shan't think so," said Rose. "I'm guessing that you aren't James, either."
"Don't you recognise me?" asked the boy. Rose drew nearer, and shook her head.
"Not especially," she replied. "Who are you?"
"I'm Harry Potter," the boy said. When she didn't immediately respond to the name, he continued, "The Boy-Who-Lived."
"I think that we are in trouble, then," said Rose. "Where I come from, I'm the Girl-Who-Lived."
She pulled back her hair to expose a scar on her forehead. It was a rather unremarkable, but completely recognisable scar, that she'd had most of her life.
"How can you have the scar?" asked Harry.
"Like I said, kid, where I come from, I'm the girl who lived," said Rose. "I think that I've crossed the boundaries that separate one universe from another. I've entered a parallel universe where I was born a boy."
"You still haven't told me who you are," stated Harry.
"I told you, I'm the Girl-Who-Lived," she said. "But my name is Rose Lily Potter."
"This is so cool," said Harry. "I've never met an alternate version of myself before."
"And hopefully, we never will again," said Rose. "One question, and this might sound like a silly question taken out of context, but what is the date?"
"November the First," said Harry.
"What year?" she asked. "And why the hell are you in the Forbidden Forest?"
"1994".
Rose groaned. "The Triwizard fucking Tournament. Three incredibly dangerous tasks, and it will be lucky if no one dies by the end."
"Right in one," said Harry. "I didn't enter."
"I know you didn't," answered Rose, reassuringly. "Certainly your friends must believe you?"
"Hermione does," said Harry. "I know that I should be used to the attention by now, but this time, even the Hufflepuffs have turned on me."
"Because of Cedric?"
"Yep," said Harry.
"I'll be able to help you get through this, given enough time," said Rose. "Which really is the problem."
"Why?"
"I only have a couple of weeks to get you ready for the First Task," she said. "But I really need to know what is going on here, Harry. I need you to sift through your memories."
"Will it hurt?"
"Not from Dumbledore or myself," she said. "Snape or the Chief Death Eater, it would hurt like hell, and believe me, that's personal experience with both of them. No, it should be like a gentle breeze through your mind."
"Go ahead, then," said Harry, and Rose started to perform Legilimency on him. He would later note that it was just as she described—a gentle breeze.
After a minute, Rose came out of her trance. "Shit, kid. The whole timeline is messed up."
"How?"
"Things happened a lot differently here than they did in my universe," she explained. "Sirius isn't free, for one. You're friends with someone I considered the plucky comic relief—Ronald Weasley. The brothers are good for a laugh, though. I have a couple of ideas where the traitor—that is to say Wormtail—is at the moment."
"He was in my dream this summer," exclaimed Harry. "He was tending to Voldemort, but it wasn't Voldemort, it was a baby-thing."
"That tells me that my suspicions are at least partially correct," said Rose. "Now, it seems to be getting late, so you'd best be getting back to the castle. Not a word of any of this to anyone, understood?"
"Of course," said Harry.
"Actually, have you written to Sirius yet?" asked Rose. Harry shook his head. "First thing in the morning, tell Sirius about the Triwizard Tournament, but do not mention me. I'd like my presence here to be a secret until I can come up with a cover story. If you tell anyone, just tell Hermione, but only in a place where you can't be overheard."
"OK," said Harry. "Wait, what should I call you? Should I call you 'Rose' or what?"
"You can call me Rose Evans for now," said Rose. "Before you go, I'd like to ask a favour."
"Anything,"
"I need your Gringotts key," she replied. "I don't exactly have a lot of cash on me at the moment."
"Here," he said handing her the key. "Bye!"
"I'll be in touch soon," she said. 'Don't be so trusting!'
\\/
Rose had gone to Gringotts and made a withdrawal of ₲1000, and had gotten some supplies, as well as a room at The Three Broomsticks in Hogsmeade. It was a bit like hiding in plain sight, she thought.
She got a lot of food, and then started the hike up the mountains outside of Hogsmeade to the co-ordinates that Harry specified.
"Lily?" called a voice. "I must be really out of it. Are you here to escort me to the afterlife?"
"No Sirius," said Rose. "I am not Lily, and I am most definitely not here to escort you to the afterlife."
"You look just like her though," said Sirius.
"Look at my eyes,"
"They're James' eyes, but how?"
"Want to hear about the greatest prank the universe has ever played?" she asked, and then told Sirius her story, including many details that she didn't want to tell Harry.
"So I'm free from your third year?" asked Sirius in amazement. "Can you come up with something?"
"I'm working on a plan, Sirius," she responded. "Walking into the Dark Lord's manor isn't exactly my idea of fun, but I'm sure that's where he is."
"You-Know-Who has a manor?"
"Yes, in a town called Little Hangleton. It used to belong to his muggle grandparents before he killed them."
"Muggle grandparents?" asked Sirius. "The thing that my pure-blood mother wanted to join with was Muggle-born?"
"Technically, from what Dumbledore has told me, he was a half-blood," said Rose. "His mother was not much more than a Squib. Ironic, isn't it?"
"Damn right," said Sirius, chuckling. "Bit of a hypocrite, then."
"Correct," said Rose. "I'm going to stay here for a while, and then see if I can't figure out how to capture Wormtail. Things can't go exactly the way they did in my universe, but I can try my best to get them close."
"One question," asked Sirius. "How old are you?"
"I have no clue," admitted Rose. "Before I ended up here, it was 2017, so I was 37, married, with three children, two boys and a girl. Now, I look a heck of a lot younger than that: around 24-28. Shut up, Sirius."
Sirius had started to laugh, and make rude gestures. "What?" he asked, just like any male in a similar situation.
"Come on, Sirius," said Rose. "I know you—and your sophomoric attitudes."
"Sorry," replied Sirius, not sounding sorry at all. "How did the children thing work? I thought you mentioned that you were gay?"
"It was a Healer who mixed magical and Muggle techniques," replied Rose. "Harry was a mix of both of us—Quidditch lover, but loved books and studying as well. James looked a lot like his namesake, except with Hermione's eyes. Lily looked like Hermione, except with green eyes that looked remarkably like her namesake."
"That sounds absolutely fascinating," said Sirius.
"I've a room at the Three Broomsticks," said Rose. "You could come along. It's been a while since I've seen my godfather."
"Where've I been?"
"You were in America," said Rose. "In the Final Battle with Voldemort, you were injured, and your girlfriend Professor Sinistra was killed. She was actually killed by Snake-Face himself. You needed space to recover, so you went to America. Your eyes were opened by the differences in the cultures. A couple of years after you moved there, around the same time that I proposed to Hermione, you met an Auror named Sarah White. You married her a year later, and had a child significantly less than nine months after your marriage."
"An Auror? Sarah White?" asked Sirius. "You can't be serious."
"No, you are," replied Rose. Sirius groaned at the bad pun. "We all thought it was one of the funniest things we'd heard in a while. The caveat of course being that we'd just defeated Voldemort a couple of years before, so not much funny stuff in a while, aside from the Weasley twins."
"Molly had twins? What are they like?"
"Troublemakers," said Rose. "McGonagall called them just as bad as you lot. They actually managed to liberate a certain parchment from Filch in their first year."
"They found the map? I hope they passed it on to you," Sirius said with pride in his voice. "About your offer—there is still the teeny little problem of me being the most wanted person in all of Britain."
"Except most people don't know about your other form," said Rose. "I've asked Rosmerta. Dogs are allowed in the inn, as long as they stay away from the food."
"I suppose you are right," said Sirius. "Only Wormtail and a handful of other people know about Padfoot."
Sirius turned into his dog form, and they walked to the inn.
Over the next couple of days, Rose did research on the Riddle House, trying to find any weaknesses in the structure. The doors were extremely vulnerable to an Unlocking Charm, it seemed, and Pettigrew was as dumb as ever.
Rose wanted to take Wormtail alive, as he was their best hope of freeing Sirius.
"What should I tell Dumbledore?" asked Sirius one day. "He wants to make sure I'm safe."
"You can tell him the basics," said Rose. "That is, my name and what I look like."
\\/
"Dumbledore seemed to wonder if you're my new girlfriend. I disavowed him of such a notion" said Sirius a couple of days later.
"Ugh," said Rose. "That's disgusting, Padfoot. Falling in love with your godfather or goddaughter is almost as disgusting as … well, an Oedipus Complex."
"He wishes to meet with you, especially if you're going to spend time around Harry," said her godfather. "I think he may have suspicions as to who you really are. In other news, what is your progress on your other mission?"
"I think that I might be close," replied Rose. She didn't want to get Sirius's hopes up in case she failed. But she knew that she was rather close.
Her mission would entail going to the manor of the most evil Dark Lord of all time and then stunning and kidnapping a minion from his base. Of course, the hard part was the finisher—getting out alive. That was one of the final variables in the plan. First, she knew where the Dark Lord was currently residing. Second, she knew how stupid Wormtail was. Third, she had an Animagus-proof container ready for its next occupant. All she needed was a way to escape the manor without having to face the main occupant of the manor—the Dark Lord himself. She knew that he was less than full powered, but somehow, he could still cast the Killing Curse.
Rose knew that from the memories Harry had supplied her, so that she could get acclimated to the current situation.
"Within a week or two," said Rose.