A hernia beside the vent would have a better outcome hopefully. The hernias I have read about here are usually in the abdomen or under the vent. Let us know what happens, and good luck.
Is she pooping normally? Where exactly is this thing coming out? Is it the vent or where? I wonder about possible intussusception where the bowel can become telescoped into itself and protrude from the vent.
https://thepoultrysite.com/disease-guide/intussusception...