The parent of the girl has my sympathy unless he actually killed her (which is not impossible; we don't know).  However, along with sympathy can come concern that a parent may have foolishly placed their child in a dangerous situation with the people he chose to live with.  If it turns out there was known violence, abuse, or inappropriate activity in this household that wasn't properly handled by the adult in charge (I believe a previous article alluded to the address "not being unknown to police"), then yes, scorn as well as outrage will be deserved.