This seems a pretty thorough and balanced account of what happened -->
LINK
According to this article, the girl's parents, or her father at least, did not seek her death, but instead, the initial instigators were a number of her male cousins.
The story also details how the stoning went on for well over two hours, while both local police and Kurdish soldiers stood by, and that the girl only lost consciousness in the final minutes.
Later the mob set her body on fire and then buried her remains with that of a dead dog
