Other People's Awesome Writing - Tumblr Posts

This is 100% what happened!! Demetri was destroyed when his beautiful locks were ruined, but Heidi did a good job and Felix reassured Demetri for weeks on end, cuddling and playing with his hair for most of the days so that the tracker would get his confidence back

So in the books Demetri is described as having long hair. But what if before the events of New Moon, during when the Volturi were doing the immortal children experiments, an immortal child got a hold of his luscious mane and yanked off a good chunk. And Heidi, who has been dying to get her hair hands on his head, gave him a hair cut.

Just a thought.