Poor girl has seen better days. That long snout and well developed brisket makes me think she's no spring chicken. Old granny on her lasts legs is my guess, not necessarily disease.
What part of the county? I noticed one of my does looking thin but haven't checked cameras in about 3 weeks. Just wandering if it was in the same general area. I'm east of the county
I would put her down given the opportunity. Would probably reach out to your local twra office to ask if they are interested in testing and disposing of the deer.