I am really sorry that you lost her. Your state vet could do a thorough necropsy if her body is kept cold and take in to them today. She may have had some birth related issue, or a chronic coccidiosis or other problem that made her not thrive. Here is a list of state vet labs to contact:
https://www.metzerfarms.com/poultry...7IOlHOhP-eD8qMtZ70RNq6BMO9kVUn3x6so7q0Z_JgEr8
https://www.metzerfarms.com/poultry...7IOlHOhP-eD8qMtZ70RNq6BMO9kVUn3x6so7q0Z_JgEr8