Redundant/sigmoid colon

Hello, my 3 year old has recently been diagnosed with a tortuous/redundant sigmoid colon, after suffering from abdominal pain and distention and pain when passing stools for over a year.
Has anyone had surgery for this (partial colectomy) and was the surgery successful? We need to do something (possibly surgery) as she is suffering daily and it's affecting her quality of life. From what I can see on this adults that have it suffer their whole lives. She has had an ng tube for over a year to increase her fluid intake and give laxatives (which don't really seem to help. Any advice is greatly appreciated 🙏