It's hard to train them to leave the poultry alone, but it can be done. When I first got my ducks, I'm sure the dog would have killed them if he could. After training him that they were to be left alone, I then got chickens, and he never seriously hurt them, but I did catch him with my bantam in his mouth once. So that had to be trained away. I just thank goodness he's part retriever and has a soft mouth or that could have easily been fatal to her. Now, he's never killed poultry, but he probably would have had I not introduced them slowly. Now his only bad behavior towards them is occasionally running at them to make them scatter, and I'm trying to train that out of him. He also knows not to go in the chicken run, and will not go in there even if it's wide open for free ranging and no one's around. So it's hard, but with patience and time, you may be able to do it. In the meantime, though, NEVER let her alone unsupervised with your poultry. It'll just give her time to reinforce her bad habits.
Thanks for the hoop coop compliment! I still love it to death. I have a second one now with legbars in it. They're great coops!