Oh, Mystery author, you have written such an endearing story. One look at Snape after many years and everything he thought he had or felt in his life completely changes. Just goes to show how Snape is still present in his life. He left it all to truly live again and although his children couldn't understand at least Harry took the initiative and started a new life.
I was so glad when I read the ending where Lily came for tea and how Harry quietly observed the interaction between her and and smiled inwardly. So sweet to read that Snape will always have a fondness for the "green-eyed Lily"