Is she drawn to fantasy? You listed a lot of fantasy titles.
I have a 10 yr old avid reader. She reads well above grade level and does like fantasy, but she loves, loves, loves funny (and coincidentally easy to read) books like Diary of a Wimpy Kid, Nate the Great, Dear Dumb Diary, Dork Diaries, Baby Mouse, etc. These are all graphic novels or are available as graphic novels in some titles (Big Nate). They're about older elementary and middle school kids, so the humor is appealing to the 10 yr old reader.
We also love, love, love audio books and always have one in progress in the car. Right now we're on the last book in the Artemis Fowl series. It is also available as a graphic novel if that might interest her. We listen to a lot of fantasy audio books. Dd1 (7th grade) loves that genre a little more. If I can find a book that is funny, fast-paced, and fantasy/sci-fi I know I've got a winner for both of them.
For short fantasy novels she might like have you tried Catwings by Ursula LeGuin or the Fairy Realm series by Emily Rodda. Catwings is shorter (about 50 pages) and there are 4 books in the series.
I think the graphic novel suggestion is a great one. My kids have some of the Amulet ones and have enjoyed those and have several other titles as well. When my dd1 was about 10 she, too, was a reluctant reader. In her case I think her anxiety just made her shut down and not open up to the experience of reading. A lot of her friends were reading the Warriors series, though, and she was feeling left out, but I found it in graphic novel format and got her the first one or two and that helped her feel a little more part of the group and also gave her some more reading experience. For her the reading just clicked one day.
I volunteer in my dd2's elementary school library and one of the assistants there is very down on graphic novels, but I think they're great. I think the library assistant feels like they're sort of dumbed down, but really they're their own art form. The librarian herself (not the assistant) has no problem at all with them and the kids all love them. I think they're excellent for reluctant readers because they really aren't little kid books, but they offer a lot of support for figuring out the text. There are so many great titles out there now. There are titles unique to the format like Amulet and Bone and others that have been adapted like the Artemis Fowl books, the Rick Riordon Percy Jackson series, even A Wrinkle In Time. My dd2 loved The City of Ember, and there's a Coraline GN, too. If you can get her reading one that has been adapted that might spark her to go back and read the original, too.
Edited by beanma - 1/9/14 at 8:00pm