A Christmas Miracle

This little ficlet is for the Hogwarts in Harmony Secret Santa exchange. It's not set in any of my current universes, Lions, Circle, Brain Trust, Interlude, or related to any other one-shot. I wrote this one off the top of my little head, so any insanity, is purely my own. It's set about four years after the Dark Lord was roasted over an open fire...Jack Frost nibbling at his toes...Sorry, couldn't resist. Harry made a decision four years ago that has haunted him ever since. H/Hr, with a side of R/LL...