I do love seeing the long-term instructors outside of the classroom, witnessing their private lives and travails. The introduction to Filius and to Pomona's matter-of-fact reaction to him filled me with pleasurable expectation of a witty and thought-provoking fic and I was not disappointed.
I love reading stories where the characters overcome or learn to live with disabilities. Flitwick's is obvious and he is forced to live with it openly. Though some would claim it's not, it affects him in every aspect of his life, physically and emotionally; not many would have the fortitude to deal with constant ego-deflating aspersions cast about their competence or prowess predicated solely on their physical appearance. (I can imagine Snape might well have learnt a thing or two about dealing with similar behaviour, by example.)
Pomona's is hidden and one can imagine her reluctance to let anyone get close enough to discover it. That she makes the first move speaks volumes of her bravery and that she puts him in his place after his contretemps speaks well of her self-esteem. Her extended gesture of resumed friendship, though, is the quintessence of Hufflepuff -- loyalty, steadfastness and a generous nature.
I loved that they did not quickly resume the sexual side of their relationship. I appreciated that Flitwick was gentleman enough not to presume and Ravenclaw enough to work diligently on the means to help his lady love and that Pomona was gracious enough not to throw his, um, shortcomings in his face (or gossip imprudently) after such an ignominious end to their first bedding. It speaks volumes of their deeply held feelings and respect for each other.
That he finds exactly the right words to say in their moment of shared grief and regret was fitting. (Whoever said the Proust quote should be Beholder's motto is right! Oh, and the Kipling for Snape... shattering.)
That she is the first to turn to him for love and comfort once their grim task had been seen to was both touching and delightful. Brava!
Truly the whole of your fic is touching and delightful. I'll definitely be reccing it.