And you would do this... How?
		
		
	 
Is it so difficult to know what is going on in your own household?  
I had kids who grew up in my house, and I was more than able to know what was going on.
It's called watching and being aware.
	
	
		
		
			Justice is letting a rapist live?
		
		
	 
Now it's rape?  
You are talking two children in the same family, correct?  
Or has the story changed that much?
I do NOT believe in enforcing the Law of Moses in my household, if we're back to that again.  
	
	
		
		
			Does justice depend on what the sister wants?
		
		
	 
The victim should have a say.
	
	
		
		
			In other words, is the standard of justice arbitrary?
		
		
	 
I have no idea what you mean by that.  It could be anything.
I would say discretion would be required ie "discretion of the judge".