I really love how you write the characters. They are still themselves when you write them, and yet still growing and learning, but in a totally acceptable way. You aren't taking them in crazy directions.
I wish there could have been more plot to this story. It would have been great if you had put more detail into the actual search. Where did they go? Who did they talk to? What path and clues did they follow to finding Ursa?
Still, it was a very well written story, and I did enjoy it!