The way it's meant to be

Three years after the War Hermione has formed a friendship with Andromeda and Narcissa who are always doing things that make her question their sanity, she's learned facts about the Black family that no one else knowsThe two remaining Black sisters decide to take matters into their own hands in a questionable way, by using a long forgotten spell to throw Hermione back in time as a member of the house of Black to stop Tom Riddle before he comes to power

I looked into this and keep finding the time line for Riddle puts him as close to or just graduated around the time McGonagall was in schoolSo I'm working with that I'm not completely sure it's correct but I think it makes an interesting timeline for a story, so I'm putting Hermione as the youngest sister to Walburga and Cygnus changing the family dynamics by her having memories of her life as a muggle born and now as a pure blood I'm changing a few peoples agesPlease keep in mind that this is a fix it time line so things are different than Harry's time line, this will have jumps to future events like a peek at what's happening or could happen and no Dumbledore will not turn out to be a bad guy that's still Tom Riddle/Voldemort