As frustrating as it is, sometimes the best thing is to give the critter the time to do what she's got to do. The fluid coming out should make that egg easier to pass now that the first one is out. I don't think that she'd be taking prey if she was in distress.

The vet has to make a living but there are a whole lot of things that he could have done that would have lined his pocket. He could have tried aspiration, surgery, God knows what else.

I'm actually a little more comfortable when a vet takes a conservative approach and wants to see what an animal can do on it's own because interventions carry a risk of their own. The waiting sucks, but a lot of times the animal benefits. I remember a dog of mine that retained one pup--dead, of course. The vet could have operated to remove it. Instead he told me to let her nurse and the hormones from nursing would probably move the pup out. He was right. It was nervewracking waiting but the dog was better off than if I had insisted he cut her open and take the pup. I would have never thought of letting it wait.