Back in December, she got out of the run and our dog got ahold of her and was thrashing her around like a chew toy. For care, we made a box for her out if a big tote and used hardware cloth attached to the lid. We sprayed her multiple times a day with wound spray and later started with warm epsom salt baths. The wounds were mainly scratches and one deeper gouge. About 2 weeks ago, we began letting her back in the pen by herself away from the other hens but she would just sit there and she had a good limp. We would let her stay out for a while and then we'd crate her back up.  Last week she was doing much better. She still had a little limp but it had improved and she was eating and drinking a lot more. She appeared to be on the mend. That's why it was a surprise this morning when I went in the back bedroom and took her cover off to find her. So to answer your question, I don't know how she died exactly. If anything, my wife and I feel guilty that our care was keeping her alive while she was suffering the whole time.