i am curious why you think this isn’t about sharia.
seems to me, this is entirely consistent with Islamic law.
also, there are many more good comments, in the first posting of this article:
Teenage Muslim Girl Stoned to Death for Participating in Beauty Contest in Ukraine (Photo)
http://www.freerepublic.com/focus/news/2727449/posts?q=1&;page=1
Sharia is famously a public process - its central purpose is to establish authority and power for the shariah judges. Public executions (not secret murders) are kind of the whole point.
While this girl could theoretically have been put on trial by a sharia court, that isn't what happened here.
These three teens raped and killed a woman and then hid her body and tried to get away with it.
A sharia court would publicly proclaim what they had done.