Granny, you might want to put a ticking clock in your coop to help the hen that got attacked. I have put clocks around with nervous birds with great luck. The ticking is like white noise and really calms them down. Calms down all creatures as well, but my spazzed out parrots have done well on it, as does our Maltese dog that has huge separation anxiety. I keep them in all the coops and aviaries and my poultry have calmed down greatly. 
