Our daughter is 16. She had a cecostomy (Chait tube) when she was 5 and it worked very well. They used her appendix for hers also. She is immunocompromised due to an inherited disease and her stoma stayed infected. Otherwise it worked great. They removed it after 2 years. Definitely remember to get your home health company to bring you a pole. We kept hooking it on things in the bathroom and it wouldn't run right. A pole allowed us to take the height up or down to adjust how it went in. The faster the fluid goes in the more you might cramp. Too much volume too quickly.
She has just completed another motility workup to reasses and will start Amitiza. If it doesn't work then she will get another cecostomy.