Buy some crickets or huge mealworms and see if she'll try to eat those from your hand.
-Kathy
I had forgotten about this! Yes, it might be worth trying. Even when my rooster was dying and wouldn't eat anything, he would still eat LIVE mealworms. They were too wonderful and juicy for him to pass up. She might be in too much pain to really go after them, but it cannot hurt to try. You can get them from a pet store, or even sporting good stores if there are any near (they sell them as fishing bait). If she won't eat them, your other chickens surely will, so they won't be wasted.