Summary: AU Philosopher's Stone. Harry Potter has a twin sister that we did not know of, up until she went to Hogwarts. Raised by James' younger brother (OC), she grew up to be a prankster but a responsible and talented child. However, imagine the Potters' (including Harry) surprise when she got sorted in the House of Snakes. A bit crestfallen, Hailey Potter manages to find comfort in the name of one Harmony Pettifogger and together, they have an adventure even more dangerous than the Golden Trio's.
Disclaimer: I do not own Harry Potter
On the night of October 31, 1981, Edward Potter and his wife Catherine went to Godric's Hollow to ask Lily and James if Hailey could go over their house for the night.
The Potter's house was placed in between two muggle houses, not that they could see them. They were protected by the Fidelius Charm, in which it will not be seen unless the secret-keeper tells them the place. The Potter's secret-keeper was Peter Pettigrew, a short, blonde hair man with bald top and rabbit-like teeth. He was a Marauder and one of James' best friends.
They drew closer to the door and knocked. After a few seconds, the door opened to reveal a tired but grinning James Potter. Judging on how he looks, he was obviously playing with the twins. He let the couple in.
"What do we owe the pleasure, my DEER ol' bro?" James asked with a mock bow, his signature teasing smile hidden beneath the bow.
"Stop being such an idiot, James. We just wanted to ask you if Hailey could go over our house for the night to give you and Lily a rest," Edward asked. Catherine chuckled at Edwards retort towards James.
James's smile turned into a genuine one and said, "Lily and I would be glad. Those kids are really hyper, especially my girl."
As if on cue, the kitchen door flew open to reveal a shrieking young boy with messy black hair and a girl with short black hair in pigtails running after him. The boy ran to James and the girl chased him, circling James.
Edward and Catherine laughed at the twins' antics. "They sure really are hyper," Catherine laughed.
The boy pretended to cry while clutching his father's left leg. He was pointing to the girl. The girl saw the boy's action, sniffed sadly, and went to the boy, hugging him.
The scene lasted for moments, until the boy hit the girl on the head lightly.
"Howie!" The girl shrieked again but before they could continue their chase, Edward picked up 'Howie' and James picked up his daughter, with 'Howie' blowing raspberries at the girl.
"Hey there, kid. Care to say your name?" Grunting, Edward asked the girl, who was struggling to blow raspberries too. Her hands were on either side of her head and she was shutting her eyes forcefully to concentrate.
She looked at him in the eyes, imitating his facial features (except that her hair is in pigtails), and said "Howie" seriously.
Catherine laughed. "So your names are both 'Howie' now, eh?"
"No! She Helee! She Helee!" Harry argued. James's daughter puffed out her cheeks in irritation to Harry's remark
It all happened in a matter of seconds: the twins switched places, which is quite usual when happening to the two of them. 'Helee' sneezed while 'Howie' yawned. Catherine now took Hailey from Edward and hugged her. "Aw, you two are so adorable," Catherine said, pinching Hailey's cheek.
The twins both giggled and Lily came out of the kitchen door. "Dinner is served," she said before walking back in. No one really noticed her smile as she walked back.
Dinner was composed of all their favorites, much to the pleasure of the Potter brothers. They sat down on the table, Lily on James's right, Catherine on Edward's left, and the twins in the middle of the two couples.
The dinner was rather uneventful except for Harry blowing raspberries at Hailey, taunting her. Hailey was struggling to do it but continuously failed which resulted for a fit of chuckles that came from the adults.
After cleaning up, Edward and Catherine picked up Hailey, who was giggling on the floor, and bid their goodbyes. James kissed his only daughter and Lily hugged her. "Be safe," James and Lily bid them as Harry clung on his father's leg, watching his aunt and uncle disappear with his sister.
Not long after they departed, Voldemort came to Godric's Hollow. Lily and James were killed but Harry survived, not without a mark on his forehead. Edward and Catherinelearned their unfortunate fate and went there. They mournedfor the loss of their other family, for the twins to be orphans. Their heart went out for brave little Harry and sweet naive Hailey. They were too late; for they found nothing except for a letter addressed to them:
Edward and Catherine,
Harry's safe at the Dursleys.
A.P.W.B.D.
