I have never had any luck trying to let a hen set in the coop with the other hens.  The only successful ones were when I took her and her eggs and put them in a separate cage/crate/pen or something, by themselves.   You can even put her in a pet taxi in the coop, with food and water and she will do fine.  You just got to clean out those big broody poops.
	
		
			
		
		
	
				
			
	
	
	
	
	
	
	
	