Hello and welcome to BYC! Glad you joined.
She has a blockage in her digestive tract somewhere or something is putting pressure on it preventing it from functioning correctly. Posting to the ER forum will help determine a possible cause and if it's curable, how to treat. Good luck.
Hello and welcome to BYC, You found an Amazing Poultry Community to be a part of with many great knowledgeable members who are more then willing to jump in and help you along your journey with any questions you may have.