I sent this before it was finished. Here is the rest of the list of fantasy books my DD10 has enjoyed the past year or so.
Septimus Heap-Angie Sage
Fablehaven-Brandon Mull
The Underland Chronicles-Suzanne Collins
Inkheart Trilogy-Cornelia Funke
Rangers Apprentice-John Flanagan
the Shadow Children-Margaret Haddix
The Familiars-Adam Epstein
The Secrets of the Immortal Nicholas Flamel-Michael Scott
Wings of Fire-Tui Sutherland
The Inheritance Cycle-Christopher Paolini
Chrestomanci-Dianna Wynn Jones

We tend to look for series, but I'll try to remember all the other great books.