Do I Dare Disturb the Universe? (гет)

When Hermione Granger falls through time, she finds herself in the middle of a changing time for the wizarding world. Grindelwald is at the height of his power, and one Tom Riddle Jr. is set to leave Hogwarts School of Witchcraft and Wizardry at the end of the term. And so the question becomes: Does Hermione dare disturb the universe? Post-Battle of Hogwarts; disregards Epilogue.