Alexia Potter's Fantastical Trip To The Past

Even in the afterlife, Snape was a pain in the ass. After a long day of fighting the final battle, Hermione was sent back in time by Snape to the Marauder era to live out her life as Alexia Potter, twin of James Potter. She was scared and tired and traumatized, and it was all she could hope that she could heal there. So, Dumbledore turns her eleven and send her to the Potter home.