I would not have any further surgery, but make her comfortable and hopefully she will recover. She is probably developing salpingitis. It is common in hens over 2, and egg products of the ovary secreted may become surrounded by more material developing masses inside the oviduct or abdomen. These objects are known as lash egg material. Sometimes they will pass smaller ones in droppings or the nest box, or we may see them inside the abdomen during a necropsy/autopsy.