Weird case of dropsy?

I posted about a female Siamese fighting fish that appeared to have dropsy a
few weeks ago. I treated her twice with maracyn. after the swelling didn't
start to go down, but she is still as swollen as she was then, but has not
got to the point were her scales have started to protrude? Does anyone know
what else that it could be. She seems buoyant and the swollen cavity appears
to be filled by either air, of a clear liquid, when she swims in front of
the lights?

cheers
Evil