My one problem with this book was that it should have been longer. I love that the story dwelt on Mulan's relationship with her father -- the gradual development from strangers to an actual relationship was very well done.
Except it pretty much took up an entire half of the story. The rest of it -- the adventure bits where she goes undercover, meets the prince, falls in love and saves China -- seemed rushed. Which is a pity, because I really enjoyed the beginning.