We have been told that if you kill all the witnesses to a crime you will not have a bounty. We have also been told that you can not hurt children. This begs the question, can children report crimes to guards? If so, is there no way to stop a child witness? Anyone have any clues? I feel almost any answer to these questions could lead to some strange circumstances...
Pickpocket the child and put the murder weapon in their inventory
I know you can't kill children but are you not allowed give them a little slap (or nudge of a battle axe....)?