Unless that is what the VSP/coroner told her, then I'm not sure that's a very reliable source.
From this article, the Harrington's actually saw the shattered bones:
http://www2.dailyprogress.com/cdp/news/local/crime/article/family_morgan_harrington_bones_were_shattered/53752/
When Morgan D. Harringtons bones were found in an Albemarle County pasture, they had been shattered and broken into jagged pieces, her parents said Wednesday.
When you view not just a skeleton, but brutal damage to a skeleton, you can imagine what [her mother] must have gone through, the victims father, Dan Harrington, said.