Also, what temperature is your tank? When I'm treating frogs for bacterial issues, I try to keep the water around 70-72. This helps slow down bacteria growth, so the frog's immune system has a better chance of working with the medicine.

Salt baths are good, but in your display tank you may want to add a teaspoon of marine salt (like Instant Ocean) per gallon of water. I find that amount of salt is good as a preventative step for bloat.

+1 to separating your frog if she isn't your only frog. If it is bacterial in nature, it will be very contagious.