Aww, this is really touching and lovely. I was actually grinning though parts of it. :)
I adore that Percy was planned -- how fitting! And that Fred and George defied the plan! LOL The whole bit about Percy coming out and Molly's reaction and one of her brothers having been gay -- bwaha, great!
So many wonderful little pieces of insight into Molly's character, as seen through Arthur's eyes. Well done.