Just finished up to this point, I really like it.
Quick question: What happens to Ron, now that he's had a silver knife coated with the blood of a werewolf under his skin? Best case scenario, the silver killed the curse in the blood, it merely has to be removed. Regular case, he's a werewolf. Worst case, he's a werewolf with chronic pain, and a short life expectancy.
Author's response
The blood would be mostly negated by the silver, but makes the wound more difficult to heal. Hence Ron still being on potions a few weeks after the injury. I would think werewolf saliva would be more infectious than blood, as the curse is passed on by a bite