So sorry for your loss. If you still have her body and haven’t buried it, you could send it to your state vet on Monday morning, as long as you keep it refrigerated and cold, but not frozen. It is a good way to get a diagnosis in case there is something contagious or if you want to get a diagnosis. Here is a list of state vets to contact for info:
https://www.metzerfarms.com/poultry-labs.html
https://www.metzerfarms.com/poultry-labs.html