I'm really awful about commenting on stories I love, but I wanted to leave a comment for you telling you how wonderful this story is. I don't think there is a story of yours I don't love, but this one has to be one of my new favorites of yours.
I laughed, and I cried while reading The Importance of Plum Trees. I'm so impressed with the story, and the interaction between the children and the adults (your children are so well written here, and behave a lot like the children in my preschool do). I think some parts that will really stick out are the sex scene of course, but the beautiful break down of both Harry and Draco. Harry's grief felt so real.
Thank you for this wonderful story, as Albus would say.