Personally, I think hunger games pretty gruesome...I have not let DS read it yet because he has a long list of books to read before he gets to those ones lol
Check out some of the ones above...if she loves fantasy she will devour them!
With reading, I keep it for fun. I don't worry about needing to challenge him with "harder" books...I simply fuel the fire of his love for reading by finding him "Just Right Books"...the ones they can read by themselves and fully love. I can give you a longer list of books if you like (I owned a bookshop for many years so I do have a pretty good list lol), ones that will fire up her imagination and having her smuggling her torch into her bed each night lol