finally someone figured it out that ron caused the troll incident or at least hermione being there and to be honest ron would of never been there to help save hermione if harry had took off running for the bathroom.
I also thought couple of years ago of doing something similiar except I was going to have him suddenly have an enfamy when wormtail stated blood of the enemy part harry would suddenely figure out if he willingly gave it then it would disrupt or screwup the ritual...but your story was still good, and I really like the hp/hg ship. thanks for the entertainment!