I read this book back in middle school, but cannot remember the title. It was a great story, but I can't seem to find it.
The book begins with a woman falsely accused of witchcraft by her neighbor. She is found guilty and is sentenced to be made into an offering for the dragon.
When the dragon finds her, she throws stones at it in a rage. The dragon finds her reaction curious and shapeshifts into a man who agrees to help her seek revenge on her accuser.