The Strange and Mysterious Life of Katrina Rowena Potter

They won the war, but at what cost? What if they could send someone back to fix it, to end the war before Halloween 1981? What if someone else could be the savior? This is the story of the strange life of Katrina Rowena Potter, the new savior of the Wizarding World. Can she save them? or will Harry be forced to step up once again? Rated M for possible future Chapters.