Harri Potter and the Lost Shepard

After firing the Crucible, Shepard is flung into a different universe, where she collides with Sirius Black just as he's thrown into the Veil, saving them both. How will a biotic Shepard affect this universe? One where the Chosen One happens to be a Hyacinth Potter, the Girl-Who-Lived? Rated M for swearing, violence and sex