Rosalie Potter, the Girl Who Lived, the Chosen One and the Woman Who Defeated Voldemort had never fully recovered from the war. She had seen so many killed and her wand had been the thing to kill so many people. It may have been over eighty years ago but that didn't mean anything to her or the only people she had left that could be called family.
The entire Weasley family, with the exception of Ron, had been killed. Arthur and Molly had been forced to live through their children being murdered painfully. Bill, Fleur and Charlie had been tortured to insanity for Rosalie's location before being mercifully killed. They never once betrayed the girl who was like a sister. Percy had been a spy for Dumbledore, pretending he hated his family and their views, going undercover as a Death Eater but was murdered by Voldemort himself when he had been found out. Ginny had been killed in her final year at Hogwarts during a Defence Against the Dark Arts class when her Death Eater teacher had had enough of her rebellious nature. George had been killed, trying to protect Rosalie during one of the many battles against Death Eaters. And the most painful one for Rosalie, Fred had died during their small wedding when a spy in the Order betrayed them. Ron was the only one left and suffered being the only Weasley left out of the once large family.
Dumbledore had been killed during a duel with Voldemort which turned out to be a distraction so Rosalie could get away unnoticed. McGonagall, someone who Rosalie had gotten close to and looked up to as a mentor and Grandmother, had been killed along with Flitwick and Sprout when Rosalie, Ron and Hermione had returned to Hogwarts looking for one of Voldemort's horcruxes to allow the trio to destroy the item and leave undetected. Snape had turned against the Order and Rosalie when he realized that Voldemort would win and cared more about staying alive than his love for Lily and promise to protect Rosalie. He ended up killing half the Order during a meeting when he brought Death Eaters to the Order headquarters. This included Remus (the last Marauder), Tonks and their son Teddy who was barely two months old and the Godson of Rosalie.
Hermione had been tortured and killed by Bellatrix when she had left Rosalie and Ron, jealous of their close relationship. Ron, who had been in love with the muggleborn witch, had been distraught and Rosalie had been shocked how their best friend had left at something so insignificant in the current climate they were in.
So many people had been killed and whilst the Wizarding World had mostly been repaired Rosalie, Ron, Neville and Luna (the people who had seen the most during the war) still suffered from the effects Voldemort had left on them all. It may have been over eighty years ago but her life had changed so drastically.
On the night before her hundredth birthday, Rosalie Potter went to sleep, not expecting what would happen next. The next morning she felt younger than she had in a long time, something which shocked the half blood witch. She got up and knew something was wrong when she saw that she was in her old room at the Dursleys which looked no different than it had when she left. Rosalie cautiously walked to the mirror and saw the same green eyes looking back at her; the strange thing was that she looked like she was fourteen again!