Gypsy... Our Mystery Kitty

Our beautiful Gypsy girl has been a mystery kitty from the start. We have had her for close to 4 months and she has consistently had a massive bloated belly. She has been fully vetted, dewormed, Felv/FIV negative, cleared of wet FIP suspicions  as her bloodwork was perfect. We are slowly narrowing down what might be causing the issue. She had X-Rays and another round of bloodwork today to show her GI tract so inflamed even after she has been on a special prescription diet for close to two weeks. We are unsure if this is a mega-colon or a bacteria overgrowth or even a bad food allergy. She is keeping her weight up but her poops are anywhere from rock hard to complete diarrhea. Despite all of her poopy issues she is just the sweetest little thing who deserves to figure out what is going on. We are not shy to get to the bottom of this but we truly need the community to help and support us. We have no problem taking on medical cases but we need consistent donations coming in to help these animals. Will you help Gypsy? We will need to consistently purchase prescription foods for her and we have spent close to $1000 already on her vet bills. PLEASE HELP CCR HELP GYPSY!