Takes place during PoA, some things changed for this story.

On September 1st, the Burrow was very lively at half six in the morning. Mrs Weasley had been awake since five, cooking breakfast and checking the kids had packed everything. The sun was just starting to rise when the youngest Weasley made her way down the stairs.
"Good morning Ginny, dear. Are your brothers awake?" Molly asked as she put plates on the table.
"Morning, mum. I don't think so. Do you want me to go next door and grab Rylee?"
Molly nodded as she headed upstairs.

Ginny made her way to the house next door and walked in.
"Rylee? Ry!" Ginny called through the house.
She heard someone walking down the stairs."Has dad left already?" the person asked.
"Yeah, I think so. But don't worry, you will see him on the train," Ginny smiled. "Mum's got coffee. Do you want me to send Fred over to help you with your trunk?"
Rylee flushed a Weasley red while Ginny laughed. It was well known to everyone that Rylee had a crush on Fred. Only she didn't admit it, and he was oblivious.
Ginny went back to the Burrow and moments later Fred was in front of her.
"I'll go grab your trunk, you go get coffee and a hairbrush," Fred smiled, ruffling her hair.
"Thank you," she smiled back before running to the Burrow.

Rylee had lived next to the Weasley's for as long as she could remember. She lived with her father, Remus Lupin, but often stayed at the Weasley's. Remus was always out, looking for a job but thanks to his... condition, he never succeeded. Mr and Mrs Weasley knew about him being a werewolf, but none of the Weasley children did. And that's how Remus and Rylee wanted it to stay.
Rylee looked a lot like her father, with her light brown hair and green eyes, but her facial shape was all her mothers.

"Oh, good morning, Rylee," Molly smiled.
"Good morning, Mrs Weasley."
"Oh, please. I've told you several times. Call me Molly."
Rylee smiled and sat next to George. She was in the year below the twins, but the year above Ron.
Fred came in, carrying her trunk, grinning.
"Thank you so much, Fred," Rylee smiled brightly.
As he sat down next to her, she kissed his cheek. She did now notice the blush on Fred's cheeks as she had turned back to the table and was eating.

Fred, George, Rylee and Lee were sitting in a compartment to their selves. Rylee had her nose in a book, while George, Fred and Lee were planning pranks for the year ahead.
The lights started to flicker and the temperature dropped dramatically. The train was slowing down and Rylee lowered her book.
"Crap," she whispered as her hair started to turn blue.
"Having a metamorphis for a friend is sometimes cool, but not helpful here," Lee commented as he shivered.
Something came in the door and Rylee felt the most depressed she had ever felt.
She stood up, aiming her wand at it and took a deep breath.
"Expecto Patronum!" Rylee yelled, watching as a white koala bear dived into the thing and sent it away.
It took a moment for the four to recover.
"I did it," Rylee whispered, staring in disbelief.
"What did you do?" George asked.
"I cast a patronus."
It wasn't long before Remus entered their compartment.
"Rylee? Are you okay?" he asked immediately, taking note that her and the boys were eating chocolate.
"I did it, dad. I cast a patronus charm and sent the dementor away."
"Oh, Rylee. I am so proud of you," he hugged her tightly.
"What was a dementor doing on the train?" Fred asked, looking at the father and daughter.
"Searching for Sirius Black," Remus answered.
Rylee looked at her father for a moment, sensing that he was a little upset at the mention of his old friend. The compartment door opened again, and everyone looked up and saw Percy.
"Good evening, Professor Lupin," he nodded. "Is everyone okay in here?"
"We are thanks to Rylee," Lee grinned.
Rylee blushed, changing her hair back to it's natural hair colour.
"We were just starting to like the blue, too," Fred teased.
"I'm gonna go find Ron," Rylee stood up and walked out of the compartment.
"I'm going to go see how long it is going to take us to arrive at Hogwarts," Remus smiled and also left.
"And I'm going to go do Head Boy duties," Percy announced before also leaving.
"I am so glad we had Rylee in here with us," Fred commented.
George rolled his eyes, that boy was whipped.

The sorting had already been done and everyone was currently eating. Hermione was talking to Harry and George, Ron was stuffing his face and Rylee and Fred were laughing and joking.
"Guys, I'm sick of this. Can we just lock them in a broom cupboard already?" George said, looking serious.
"How bad was it in the summer?" Harry asked.
"Terrible. They kept getting too close and then blushing about it."
"I personally think it's cute," Ginny commented, looking at her brother.
"No one cares what you think," Ron said, his mouth full of food.
"Honestly, Ronald," Hermione shook her head.
"Lock them in a cupboard and see how Rylee thanks you," Harry smirked, talking to George.

Rylee hit Fred's shoulder as he made an inappropriate joke.
"Hey, hey, stop the abuse," Fred chuckled.
Rylee stuck her tongue out at the twin, turning back to her food.
"Mature."

Dumbledore made his speech and sent everyone back to their dorms. George, Fred, Rylee and Lee each raced back to the common room, having heard the passwork from one of the prefects. WHen they entered, George and Lee collapsed into the armchairs by the fire which left Rylee and Fred to share the sofa.
"I hope this year will be good," Rylee commented.
"Of course it will be, Ry," George said, sharing a look with Lee.
The four stayed up, messing around for a while before heading to bed.