Wow, you lot really liked this, so here is another chapter for Sister of Potter.

Mairin woke up feeling refreshed, jumping out of her bed, she went to her trunk and picked up her robes. And about twenty minutes later she walked out of the restroom her hair wet and her new robes on. She looked around the room and saw the rest of her dorm mates waking up.

"Morning everyone," She said, walking across the room and grabbing her bag and wand.

The other girls seemed to just look at her like she was some kind of strange animal as she walked over to Terra, "I'll be waiting for you in the Great Hall, I'll see you there."

With that she left the dorm room, heading through the halls towards the Great hall from the dungeons, whistling along as she did so. Eventually she reached the great hall, and as she walked in, she saw Lily.

"Hi Lily, How are you today?" Mairin asked as they walked into the Great Hall.

"I'm alright Mairin, are you ready for your first day of classes?" Lily asked, smiling as the young Slytherin shook her head up and down excitedly.

As they were about to part ways when James stood up from the Gryffindor table, and upon seeing him, Mairin smiled and went to hug him. But as she approached James walked away from her, a scowl upon his face, causing confusion to fall across her own.

"James," She said, racing after him, following him out of the great hall, following him to an abandoned classroom.

"James Fleamont Potter," Mairin Seethed as she walked in behind him, "Why the Bloody hell are you ignoring me."

"We are in enemy houses now Mairin," James said, his tone unfriendly, "Slytherin is a dark House, and I don't want any part of that."

Mairin stood their shock, disbelief and fear written across her face as James walked from the room and closed the door behind him. Finally about five minutes later, She left the room, and headed down to the great hall tears stinging her eyes as she sat down at the Slytherin Table.

"Mairin, where were you, you left the Dorms before us… Are you ok," Terra asked, seeing the tears in Mairin's eyes.

"I'm fine," She said, wiping the tears from her eyes, and grabbing some food as she began to eat, even though she didn't feel that hungry. Sev, saw through this and sent a look over to Lily, who had seen the distressed girl enter the re-enter hall.

"So have the passed out the schedules yet?" Mairin asked, with a fake smile plastered onto her face as Terra handed her the time table.

-Time Skip- Halloween same year.

Minerva McGonagall was walking through the corridors of Hogwarts, because several students had reported that someone was in the charms corridors restroom, crying. As Deputy Headmistress it was her job to make sure that Students were alright, and help them when they needed assistance.

When she entered the restroom she expected several things, but one of them was not to see the Second Year Lily Potter, her friends Marlene Truman and Alice Quickwillow, and the first year Slytherin Terra Licadia all comforting the young and promising Mairin Potter who's eyes were red rimmed, full of tears, her robes covered in mud, and her once long black hair was not choppy and short.

The four didn't seem to hear her enter the room, because their conversation continued on.

"It really isn't that bad Mairin," Lily said, as she hugged the first year girl.

"Yeah, it isn't permanent, most of this will wash right off," Alice said, rubbing the younger girls back reassuringly.

"But my hair," Mairin said in between sobs "Why can James and his friends leave me alone, I was just helping Sev out."

"I hate to tell you this," Marlene said, her eyes raised, "But the pull pranks on everyone, but the hit the Slytherin house extraordinary hard."

"At least your humiliation was a bit better than Sev's, they transfigured his robes into a pink dress." Terra said, squeezing her hand reassuringly.

McGonagall, after hearing this, cleared her throat, causing the girls to look towards her.

"Ms. Potter, If you were being bullied, you could have just come to me, I would have helped you." She said, and the gathered girls snorted.

"Dumbledore wouldn't though," Lily said icely, "He bails them out whenever their pranks involve a Slytherin."

"Now -" McGonagall began, but was interrupted by the other three girls who all began voicing the same sentiment as Lily had. McGonagall looked sadly to the young girls, then said, "Well, follow me, even if you don't go to the great hall, there's no reason that you shouldn't have a Halloween feast."

The three girls followed McGonagall to her classroom, and as they entered, she looked at the five of them, "This is the only time I will give you permission to eat in my classroom."

As the three sat down, McGonagall called several of the house elves to get them some food, while she sat down and ate with them, telling them stories and giving information on different spells. After the finished dinner, McGonagall used her magic to make Mairin's hair to grow back to the length it had been before that day. After which, Mairin engulfed the Professor in a large hug.

"If your brother bothers you again, come to me, I'll sort him out," McGonagall said and Mairin nodded and smiled at her. Then the group departed and left for their separate common rooms, causing McGonagall to sigh sadly, then pick up a quill and begin a letter to an old friend.

-Beginning of Christmas Holidays

Mairin and James walk off the train together, with Mairin giving her brother an almost deadly glare. James on the other hand wasn't even acknowledging her presence, and was sporting a very nice black eye. Their parents, observing this as the two walked over to where they were standing.

"James, Mairin," Euphemia said, her eyes both joyful, yet sad, her children were arguing. As soon as she got near her mother, Mairin's face softened and she ran to her mother and engulfed her in a hug. As soon as James arrived, Fleamont apparated them back to their home.

"So how have your classes been going?" Fleamont asked as they all sat in the family room, the trunks being taken away by the House Elves.

"I've been doing very good in most of my classes, and I made it onto the quidditch team, I'm the seeker" James said, sitting in his chair lazily, putting one of his legs over the arm of the chair.

"Very good, and you Mairin?" Euphemia asked, her eyes meeting Mairin's. Mairin, who saw in her chair with her legs crossed nodded her head enthusiastically.

"Oh, I have absolutely loved my classes, and I can't wait for my third year when I can start Runes and Arithmancy." She said excitedly, and her parents smiled and looked at one another, then their faces hardened.

"Well, around Halloween we got an interesting letter from professor McGonagall, Want to take a guess at what it said?" Fleamont asked, his eyebrows raised, expecting a reaction from his children and was not disappointed when he did. James' face immediately was filled with shock and a tint of fear. Mairin's reaction was sudden and immediate, she cheeks flushed with shame as she shot out of her seat, and bolted from the family room.

"Mairin," Fleamont called, shocked at her reaction, Euphemia put a hand on his shoulder then both turned and looked at James who looked like a rat caught in a trap.

"What did we tell you when you started this year?" Fleamont asked, his tone icey.

James looked to the ground, then said, "To watch out for Mairin, and protect her."

"And instead, you have done the exact opposite, McGonagall is and old and dear friend of our family, we have both decided that you will be serving detentions for the rest of the year with her instead of suspending you." Euphemia told her son, sadness and disappointment in her voice as she stood and walked from the room. Going through the halls until she reached Mairin's room. She knocked on the door of the room, and hear Mairin's soft, "Come In."

She walked into the room, and saw her daughter lying on her bed, tears in her shame filled hazel eyes.

"Mairin, there is nothing you have done that you need to be ashamed for," Euphemia said, as she sat down next to her daughter.

"But I'm a Slytherin, James hates Slytherin's," Mairin said, "Maybe if I wasn't he wouldn't bully me."

"No, Mairin, Listen to me," She said, her voice filled with kindness, "There is nothing, nothing wrong with being in Slytherin, you hear me."

Mairin's Watery Hazel eyes met her mother's green eyes, "I was in Slytherin Mairin, my family can trace our bloodline to Salazar Slytherin, your Father can Trace his to Godric Gryffindor. We wouldn't have cared if you had been sorted into any of the houses."

Mairin's eyes widened at her mother's statement, and the two hugged and then Euphemia called out, "Tispy."

A pop sounded through the room and a house elf was standing there.

"Mistress calls for Tispy," She said, and Euphemia smiled, "Bring up a plate of those Yule cookies you made earlier and a glass of milk, Mairin should have something to cheer her up."

-Time Skip to Yule evening

The Potters returned home after attending the ministry's Yule Ball, the children excited to recieve their presents, and the adults ready to see their surprised looks. As the family dressed themselves in non formal clothes they then entered the room. Mairin and James were confused when their parents told them to close their eyes, but they did so. Their parents each brought out a kitten, one a ginger half Kneazle, was given to James by his father. The other, a black and white half shadow cat was given to Mairin by her mother. Mairin's eyes shot open as the kitten climbed up to her shoulder, and perched itself onto it, purring as it did so. Causing Mairn to giggle as it rubbed itself against her cheek.

"Wicked," James said, looking at his cat, which had nestled itself into the crook of his arm, and he began to pet it's soft fur.

"Well what are you going to name them," Fleamont asked, his eyes sparkling with joy at his children's joy, and wonder.

"I'll call her Morgan," Mairin said, as she stroked the side of her kitten from its perch on the side of her shoulder.

James yelped from his seat, as his kitten had began kneading into the crook of his arm with its tiny little claws.

"Oww," He yelped, as he picked the little animal up and held it up to his face, "Well, I think I'll name mine Crookshanks, he seems to already live up to his name."

The family laughed and the as the night became older, Fleamont and Euphemia retired to their bed, leaving James and Mairin to play with their kittens a bit longer. In the morning, Euphemia walked into the family room to find Mairin curled up next to a sleeping James, whose arm was draped over Mairin's shoulder. And it seemed to her, much to her relief, as though the decades old rivalry between Gryffindor and Slytherin could not break the bonds of family.