Just catching up after being off line for a while and read this thread. It's like a novel! I'm so glad to see she is doing well!!
My biggest fear is predators since I live way out in the country. I'm hoping my "Feather Fortress" (the coop built to withstand a grizzly bear attack even though the worst we have here are coyotes and raccoon) and my dogs will keep my chicks safe. But we are all human and I know someday I will forget to close up the coop. So we plan on a fairly secure coop and I am saving for an automatic pop door that opens and closes itself since I KNOW we will forget at some point.
Don't be hard on yourself. I doubt anyone on BYC can say they have never forgotten. You are a great chicken mom! You've taken such good care of her and, again, I am so glad she is doing well!!