Doesn't sound much like swim bladder to me, not with her gills moving like that. Do you treat the water? I'd check the pH levels, ammonia levels, anything. If you can - try moving her into a small bowl with room temperature bottled water in it. Just to see if there is any improvement. That's what I would do. If you can't help her, there isn't much you can do with fish - especially if all the levels are normal in your tank. The next step would unfortunately be to humanely 'euthanize' the fish. (Vodka, and Ice water is what I use when I have a fish that can't be cured - or a frog.)
I hope she gets better.
I hope she gets better.