Definately a good start and I already like the character.
Fear of being stole from her? She is a thief. The safest place for things would be in her control I would think. And a key wouldn't be good enough if she is that paranoid. Needs a story behind it, stuff stolen in the past and such. There would probably and elaborate cache of her most valued possessions too since she loves the manuscripts. (Probably my pettiness but I like these kind of details about characters)
The rest is pretty good, I am probably picky because I like the character and want to know more. Got me hooked, now reel me in. Go to Comment
There are two major (read feuding) provinces in the kingdom. The Lord of one is secretly a mad, power-hungry despot, constantly plotting against the king. The Lady of the other is secretly an ancient silver dragon.