You already know how much I adored your story. I feel so priviledged I that I got to "read as you wrote." Every scenario behind each door started out with so much hope, and then to get so cruelly dashed at the end. And everyone of them quite original...early on I wouldn't have minded any of them being a good choice, if our Snape had found happiness there.
But of course, it was the scenario of his relationship with Harry that was the best! I kind of felt like I *was* Severus...wandering the house with him and discovering what indeed he had found with Harry - and I loved how badly he avoided the pensieve at first, but was drawn to it daily inspite of himself. I felt total glee when he wanted the relationship by the time Harry came home. (We did too, Harry!)
Another great story by you that will go into my "favorite re-reads" pile for certain (along with quite a few others of yours, I might add)!