Dagworth-Granger's Experiment

When the Grangers got a visit from Professor McGonagall, Hermione got more than she bargained for. You're a witch! Your father's a squib! Your great-grandfather is the famous potioneer! Oh, here, take this potion, it'll just calm you down. Little did she know, it would send her back to 1971 as a lost 5 year old and into Dorea Potter's waiting arms. Granger Bashing later.