Not sure exactly what you mean by sterile. Septic means that the infection has spread throughout. Sterile means the absence of bacteria or infection. I have never heard of sterile EYP.I wonder if the only way to tell if it's septic EYP vs sterile?
In the best case scenario it would be that your hen reacts well to the antibiotics. The infection clears. Then... you have to deal with her laying eggs. If after a bout with EYP she becomes sterile meaning unable to lay eggs again (like a sterile woman can’t have children) then that would truly be the best case scenario because the cycle would not keep repeating. And the antibiotics cleared the infection. Make sense?
I love Nani so much, she's the sweetest hen who I've never seen bully any other chicken or get bullied - she is amazing! It's definitely been difficult/emotional for me, and at this point I do feel some relief to understand her situation slightly better and see her doing / feeling better, though it's all still somewhat of a mystery to me. I'm just doing my best to support her with a tiny glimmer of hope that maybe she can see this through, and if not, I'll do my best to come to terms with the inevitable and make sure that she doesn't live a life of discomfort. I live in Hawaii, and because we live so close to the equator there is not a huge difference in climate / daylight hours during winter, so I'm not sure that it being winter will be much of a change for her though I do hope so!! I pray you never have to deal with this, it's definitely tricky and something I never expected to deal with in a 2.5 year old otherwise healthy sweetheart. Thank you again for your care! I will keep you all posted on her journey <3