OK, now don't all yell at me but if she were mine I would put some nice warm water in the bath and give her a warm swim for 5 minutes. Whilst typing that I remembered what I had read, it could be just one extra large egg blocking the exit. Can you see an egg at the vent ? Is there a bulge right by the vent ? If so then it would be good to help her to get that egg layed and so clear the way for the rest.

Just sugestions....