Oh, how fun! I love how bubbly and energetic Allie is. I'd like to think young Severus Snape would have been that way too if his life's harsh circumstances hadn't made him so guarded and unhappy at an early age. After all, he must have always had a lot of energy to be working two shifts, as it were. Three, counting looking after Slytherin House.
I know you say below you see Allie as a Ravenclaw, but for some reason before I even read that, I had thought about what House this suggested for her (no idea why! I am so not a "What House are you?" kind of fan.) But what struck me was how this is what an outstanding Hufflepuff might really be: bright like a Ravenclaw, yes; clever (Slytherin) yes, outgoing and courageous yes. But most of all, genuinely interested in others and always happy to be with people.
Those are the qualities that really stand out in Allie in this drabble. And it's cool to see how much that "speaks for" Severus, who can otherwise only express himself by setting a place for Harry even while he grumbles as though he doesn't want him there...
So much fun! P.S. A typo in'Occlumency'? She reads them both like the proverbial book, doesn't she?