Lash eggs and salpingitis are very common in hens. They can live fairly normal lives with it. Hopefully she will eventually stop laying altogether. When the eggs come down the oviduct, they sometimes reverse tract and go back out the top into the abdomen. Some people get their vets to use expensive hormone implants to stop them from laying for 4-6 month periods. Antibiotics rarely help at this point. I would prefer to just let them live out their lives as normally as possible, and consider putting them down if they are suffering. They may stop eating one day, and other chickens will peck them.
