Sneaking Into Hogwarts

While on the run with Harry and Ron being away from Hogwarts becomes physically painful for Hermione. She finds a way to get into Hogwarts hopefully undetected and help Ron and Harry sneak in to end the war once and for all. But will Hermione ever figure out why she feels the way she does? Rated M because I'm paranoid and for possible future chapters. Will be HG/MM.