Omg that's terrible! Poor thing I hope she can survive the injuries 😞 I don't know what I would do in this situation. I would be panicked that's for sure. Please keep us informed on her progress.
What area are you in? Im near the coast in Corpus and our ranch is in George West about an hour from Corpus. The weather is sometimes better in one place or the other.
We used screws and washers as well. We sandwiched the hardware cloth on our windows with the trim. On our run we installed the hardware cloth from the inside so the seams are on the run interior and not exposed on the outside.
so sad I couldn't even imagine. I just got my coop up and running and have just about put every thing I could think of to keep predators out so if something like this were to ever happen I would be devastated as well.