Reads more like a gang or Wiccan initiation.
Some methods of advancement in Satanic ritualism involves human sacrifice and at least a blood letting. A 14-yr old girl would be a ripe initiate for that type of crime.
I don't think so.
This is ghetto territory.
Just your "normal" black on black violence, except lately it seems to be moving from teen to pre-teen years, just like the age of their first pregnancy.