I felt such a pervading sense of sadness nearly all the way through it was heartbreaking. Harry sad that his Sev was gone, Sev sad that his whole life was gone and everything was not as he wanted it.lily's sadness that she couldn't get it all to work out as it should.
Then the last half a dozen paragraphs as Harry and Severus realise what what was happening between them, the joy of that was more intense for the low I'd been at. Definitely one that will stand the test of time to become a 'classic'. Well done Minxie.