How interesting to meet Lyall! I haven't read many (if any, when I think about it) fics with him before. And I like the idea of him and Tonks knowing each other.
It's an intruiging thought that Remus would distance himself from people close to him in order to protect them, not just Tonks. And of course, neither of them wants him to...
The story about what happened to Hope was heartbreaking indeed, and the whole fic was nicely done and a fascinating read :D