Betta needs help ASAP have tried everything!?

Ok, I don't know if anyone here knows much about bettas, but mine is sick and has been for some time. It all started with a little bit of fungus on her face. I tried to treat with aquarium salt, anti-fungal and anti-bacterial agents. By the next week it had spread to her body about half way down and her lips had started to dissolve. I removed her to a different tank with new and fresh water. I treated with a new and stronger anti-fungal. Today she has developed major popeye. If anyone has seen this before and/or has a suggestion about what I can do, I would appreciate it. I don't want her to die! :-(