What if Sirius Black and Amelia Bones had been dating before that fateful Halloween night? What if, two and a half years later, Amelia managed to arrange a trial for Sirius? What if, some days before the trial, Sirius asked Amelia to check up on Harry? Motherly Amelia. Initially unsupportive Dumbledore and mean Snape but no bashing. Cute bonding. Amius of course.