Hens go broody when you don’t want them to… and won’t go broody when you do. 
HI shiningeyes, I'm sorry to report that she died last year. She hung in there for a long time with signs of improvement the baytril did help but in her case I think it prolonged the inevitable. I urge you to reach out to @casportpony for advice on prognosis as my experience is limited. I don't want to steer you wrong. So sorry you're going through this and hope your hen fully recovers.