Good start I like the set up, the only problem I had was this little section:
"“No, Harry needed his friends weeks ago. When he was still wallowing in guilt over Cedric’s death. Did either of your children want to be his friend then, when a simple letter might have helped? Hermione didn’t either.” Sirius and Remus left the room"
Remus really doesnt have room to talk afterall he wasnt there for 13 years.
Looking out for the next chapter!
Torg.