Somehow, it seems like you always post something like this just when I most need it. This is a lovely scene, beautiful in itself, and also with a strong feeling of potential for the future. I love that about the Allieverse, that most of what you write reflects the cautious hope of both Harry and Severus for solace to fill the empty space both of them share.
Severus is so perfect, with no welcome at all in his words, while at the same time already assuming - or hoping - that Harry will stay. And Allie is by far my favorite original character ever. She's so adorable. Her enthusiasm at seeing Harry feels like she is expressing a part of Severus that he simply cannot let show himself.