This was wonderful. I'm always fascinated with the backstory of Eileen and Tobias, because really: what would cause an intelligent, talented (or at least someone conscious of her talents), young witch to marry and stay with a man like Tobias? You have a fabulous and thorough interpretation here and I adore it.
Regardless of knowing the inevitable outcome of the Snape family, being the angst-skank I am, I can't get enough. And this piece only fuels the fire ;)
(Oddly enough, I was listening to "Young Love" by Mystery Jets while reading. Talk about disconcerting...)