Thanks. It is always nerve-wracking when it occurs and this is the third time it has happened. It seems the best course of action is to have the vet insert a needle to initially pull as much fluid from it as they can. Then when that is done, she bleeds out through the needle hole which causes the swelling to go down.
My living room looks like a murder scene with all of the blood strewn about. But if it relieves the pressure and makes her feel better, it's worth it.
I would still love to know what this growth is, why it keeps coming back, and what can be done to eliminate it permanently. None of the 3 vets I have been to has been able to explain any of it which I suppose is the most frustrating part.
But for now, she's back to normal.