I really enjoy this story. Lydia is such an intriguing character, so I love reading about her. I was wondering why there's nothing about her friends so far in the story. Does she not have any, or are they just unimportant to the plot?
Author's Response: Thanks! I'm not sure how fully I ought to answer your question (mostly because I feel it's a fairly insightful one), but seeing as how Chapter 5 is now posted, I think it's safe to say this much:
By the time chapter 5 is over, Lydia considers herself to have two friends. One of them is mentioned in Chapter 4. Lydia is very aware of the fact that she doesn't have many friends. She is an introvert who arrived at Hogwarts very much alone after suffering a traumatic childhood.
Her grandfather loves her very much and is extremely overprotective. (Lydia never did get her Hogsmeade slip signed, though she can go now since she's of age.) Fortunately, a certain Transfiguration teacher tends to take a special interest in students who are "alone and friendless".
It was Dumbledore who suggested to Professor Flitwick that Lydia should be invited to join the duelling club. Upon winning her first tournament, Professor Flitwick thought it would be nice to inform Gavin Prince of Lydia’s accomplishment, which resulted in her being told to quit. Professor Flitwick received a polite letter from Mr Prince thanking him for his letter, but respectfully informing Flitwick that he didn’t want his granddaughter to participate in a duelling club as it wasn’t a particularly safe sport, etc.
Dumbledore remained concerned about Lydia and suggested to one of his Gryffindor students that the library would make a good place for a chess match. His plan worked considerably better on that occasion and neither girl suspected Dumbledore’s hand in forming their friendship.