BethLeopard - so sorry to hear of your loss. I love my hens, each and every one, and losing one causes me tremendous grief and guilt.
I am, however, pretty grim about the inevitably of loss to hawks - having lost way too many. We did not find having a rooster did ANYTHING to stop the hawks, and he was a big, aggressive boy. He was just outclassed by even our little Cooper's Hawks. If our hens would stay around the dogs or horses, or us (when we are outside), they would be fine. But they are chickens and they scatter about. Depending on your hawk, even cover is not enough. Our Cooper's will hit a hen, she'll dive for cover, and they go right in after her.
I have learned (after a few years and a LOT of grief), that the decision between free ranging hen loss vs. locked up surviving hens is a difficult one. For now, the ladies get about 6-8 hours a day free ranging on 7 acres, and they spend the rest of their time in our Fort Knox of a coop / run. And I ask forgiveness for the ones who don't make it...
If it is possible for you to roof in your "free-range" area with some kind of fencing, do it!! Once a hawk has made a kill, they will definitely hang around for a good week or so trying again. They seem to move on after that, but for us, they eventually come back (we are in a migratory pattern).
Kate