Baytril is a powerful antibiotic. It's not approved for poultry because it can cause antibiotic resistance when used in food animals that can possibly spread drug resistant bacteria in the human population.
Since she's already been on it for the maximum recommended time, you need to stop it.
I have a two-year old hen with a stubborn reproductive infection and she's had three different ones with no improvement. This happens. I keep trying different ones until hopefully something works. I just ordered this one from Jedd's.
https://jedds.com/products/triple-c-vetafarm?_pos=1&_sid=03cd6a793&_ss=r It's a combo of three meds for stubborn infections.
You would need to break open the 100mg capsules and divide the contents into four 25mg doses, and give two 25mg doses per day.