When Jess woke up the morning after the Sorting Ceremony, she was surprised to see Harry waiting for her to come out of her dormitory.

"Harry! I thought you'd have gone to breakfast already."

"And miss out on walking in with my baby sister? Never." Harry looked at his sister, hoping that he'd be able to spend more time with her in-between classes.

When they got to the Great Hall, they heard Mrs. Weasley's Howler. Jess pulled him back and said "Let's spare our ears and wait until it's done talking." After a few minutes, it calmed down enough that they were able to get seats next to each other. They both tucked into large breakfasts, until Harry was startled by a raven settling a package in front of him, the card reading "From your future adopted mum, Rose." He saw that Jess had gotten a similar package, her note reading 'Congratulations on becoming a Gryffindor, love Mummy."

Jess looked at him and smiled "It's our new robes. They're all climate controlled and have protective spells so if we have an accident in Potions, we won't be burned or hurt by them in any way unless it has direct contact with our skin."

Harry was surprised by his future Mum's gift, and had to wipe away a tear before anyone could see him cry over a small thing like this. But what his sister did next surprised him even more. She had put her arms around his waist and hugged him while saying "I'm glad to have you as a big brother."

Harry put his arms around her awkwardly and said "I'm glad you're my little sister too, but it's time to get our timetables for the semester."

Jess disengaged herself from the hug as Professor McGonagall handed her and Harry their time tables. Jess said brightly "Ooh, I've got double Potions with Slytherin first!"

Harry snorted into his pumpkin juice before saying "Snape hates Gryffindor, and hates Potters most of all."

Jess turned to Harry and said "Nope, he hates Gryffindors and you because you remind him so much of our father James in your appearance minus his eyes. You've got our Mother's eyes. I look like her, but I've got our Father's eyes. It'll drive him mad, but if I confront him before class, maybe I can change his mind."

Harry blinked owlishly behind his glasses "Wow. I didn't think about it like that."

Jess shrugged before saying "I didn't expect you to. Now I have a question."

"Ask away."

"How do I get there?"

After Harry showed her the way to her first class, he went to his first of the day, Herbology with the Hufflepuffs.

Jess waited impatiently for her class to start for about ten minutes, before impulsively going in after using the Accio spell to bring her potions supplies and cauldron to her. She set up in the front row at the center student table. She saw that her professor hadn't come out yet, so she decided to knock on his door, while saying "Professor? May I speak to you?"

She stepped back before Snape came out, glaring at what he'd thought was just a random Gryffindor first-year. When he saw it was Jess he stiffly said "What do you want. Potter?"

"I'd like to ask you a few questions about the potion you are having us do today."

"Oh?" Snape was surprised that the daughter of James Potter could even have an interest in Potions.

"Yes. First off, why do we need snake fangs? They have poison in them."

Snape mused for a moment before replying "You know, I honestly don't know."

"Don't worry, I won't tell anyone." she winked at him, eliciting a rare, but honest smile from the Potions Master. "Auntie Donna said the same thing when I asked her."

"Auntie Donna? Oh, you mean Potions Mistress Donna Noble. Yes, I have heard of her."

"She told me that when you, her and my mother were in school together you fancied my mother."

Snape's smile fell a little bit "Yes, I did. She looked almost exactly like you, but you have your father's eyes."

Jess said softly "I am not Lily, and Harry is not James. Please do not treat us like we are carbon copies of them. We are ourselves. I hope you can remember that."

Snape looked down at the miniature version of Lily, no. No, she is Jessica Potter. Jessica Potter and her elder brother is Harry Potter. He smiled and said "Of course, Miss Potter. I won't make that mistake again."

Jess sighed in relief "Thank you. For everything and for protecting him last year. I know you hated it."

"It was my pleasure." Snape smiled at his new favorite student.

"Liar." she grinned back, eliciting a chuckle from her first and favorite teacher.

Once the class arrived, he'd paired the Gryffindors and Slytherins up with each other, with a spot next to Jess open. He instructed them on how to make a Cure for Boils and watched the students get to work. He almost smiled at how good Jess was at making the end of class she'd been the only successful maker of the potion. However, no one's cauldron had melted.

After double Potions, it was time for lunch. Jess grabbed a sandwich and a glass of pumpkin juice before she went outside to enjoy the outside air. Once lunch was finished, Harry wished her good luck at her first flying lesson.

Madam Hooch strode purposefully onto the grass where two rows of brooms laid.

She took notice that all of the Ravenclaws and Gryffindors were standing in a huddle while a short, red-haired Gryffindor stood protectively in front of a smaller, crying Ravenclaw while yelling at a taller, and well-built first-year Gryffindor. The girl was yelling "You are the reason our House gets a bad name! Just because Luna is in Ravenclaw doesn't mean you can use her as a punching bag!" Madam Hooch smiled thinking that even though this girl was the daughter of Lily Evans, she certainly had Donna Noble's temper. "If you ever harm her again, I will beat you to a pulp with my bare hands, make no mistake." she turned to the rest of her year-mates "And that goes for you lot as well! And tell the idiots in Slytherin and your friends in Hufflepuff as well, because Luna Lovegood is Protected!"

"Well said!" Madam Hooch said, finally making her presence known. "Well? Line up!"

As the students hurried to comply she walked over to Jess and said "Well done, miss Potter. I could have sworn that I was looking at your Aunt Donna from her first year." Madam Hooch smiled before challenging her "Now, let's see if you can do as well as your brother did last year."

Turning to the class she said "Well? What are you waiting for? Stick your right hand over the broom and say up."

"Up!" students exclaimed, with some students having their brooms come up faster than others. Then everyone stopped and looked as they saw that Jess hadn't moved, except that her eyes had closed and her hand was above her broom, then without her saying a word, the broom shot up into her hand, and she opened her eyes while smiling to herself in apparent satisfaction.

Madam Hooch thought about how similar her calling of the broom was to that of her mother Lily, who'd been very good at wandless and silent magic. From there, the class progressed normally, and thankfully, no one was hurt like last year.

After the class was over, and the brooms were put away, it was time for dinner. Harry waited for Jess and once again saved her a seat in-between him and Neville, who he'd become closer to because of his knowledge of Jess when she was growing up, and his future adopted family.

"Hey, Harry!" Jess exclaimed before giving him a hug.

"And what about me?" Neville objected in mock jealousy.

"I'm sorry." she gave Neville a hug and asked both her brother and neighbor "How was your first day of classes?"

"It was horrible." Harry and Neville said at the same time.

Jess looked at both of them with a smile "Lockheart, huh?"

"How'd you guess?" Neville said with a glum expression.

"He tried to marry Donna." Jess said as little emotion and facial expression as possible.

Neville sprayed his pumpkin over his plate, gasping "He did what?"

Harry said "Who's Donna?"

"Our aunt. Well, adopted aunt. She's the Potions Mistress Donna Noble."

Harry's eyes widened in surprise "You mean that I'll be living under the same roof as the woman that knew everything about our family?"

"Yup."

Quietly he said "Then why didn't they adopt me before?"

Jess held his arm and said "I don't know. Maybe you should ask Donna. Write her a letter, maybe she'd be able to shed some light on the subject."

Harry put an arm around his little sister's shoulders and said "I will. But let's move to a happier subject. What's this I'm hearing about you calling out the entire house on being bullies?" When Jess started to look at him with an expression that Harry later named Danger, he said "Hey, I agree with you. And who is the girl that is now under the protection of the Potters?"

"Luna Lovegood. She's in my year and a Ravenclaw."

"Lovegood... Short? Blonde hair?"

"Yes. She's another of our neighbors."

"Oh. Well I'd like to meet her soon. Let's finish our meal so I can go and write that letter to our aunt."

After they finished dinner, Jess went up to bed to study for an hour before putting out the lights, but Harry stayed up by the fireplace and wrote a letter to his Aunt Donna.

Once it was finished, he took the letter to Jess's owl Rafe in the Owlery. He held out a dormouse and asked "Would you please send this to Donna Noble? I don't know where she is, but since your Jess's owl I thought you might." Rafe hooted softly and held out his leg. Harry attached it to his leg and gave him the dormouse as thanks. Rafe flew off into the night.

When Harry went back to the common room, he passed by Hermione and Ron, briefly saying hello before going upstairs to bed. Harry's friends looked at each other and shrugged, hoping that he'd tell them why he'd been spending so much time with a first-year. After another hour, everyone was asleep. What would happen the next morning at The Hourglass when Donna received Harry's letter would change Hogwarts history forever.