I am sorry to hear that, we had a dog that ONCE killed a chicken. Deaconjim tied the said chicken round the dogs neck for a week. He had to drag that thing whever he went and even to bed at night. Learnt a lesson though, never ever touched a chicken again! : )
A friend of mine told me that would work, too! I don't know, this dog will eat squirrels that have been road kill for a week so it might not work on her.