If she has been laying and now ceased she may be egg bound. You will need to do a thorough examination of her abdomen .Check for any lumps or bulges. Sometimes a warm soak in the bath massaging towards the vent. I would quarantine her so that you can see a poop. Offer her some scrambled egg and check that her crop is emptying.
	
		
			
		
		
	
				
			 
	 
 
		 
			
		
		
		
	
	
			
		 
 
		
 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		