Frothy bloat or just gas bloat? Garden hose for gas bloat. Therabloat for the frothy kind. Knife (preferably cannula) in the "triangle" high on the left side if life threatening frothy bloat to relieve the pressure.
Whats her diet look like? If there is a lot of grain or maybe even alfalfa in her diet? More EFFECTIVE fiber in the diet should drastically reduce bloat.