TLC will be paying out big time for all the skin removal surgery if they renew the series. Tammy will very much learn what pain is. The only part of her body that won’t need cutting and stretching is maybe her feet/hands. She’ll never have a normal looking body, and her joints will never recover what she’s put them through.
Amy and Chris will be pissed, because neither of them are ready for plastics.
ETA: TLC will also be pissed because Tammy needs between $100k and $150k worth of plastic surgery. Face lift, neck lift, arms (both upper and lower), breast reconstruction, 360 degree abdominoplasty, mons tightening, and both thigh and calf tightening. IIRC, TLC used to have a program called The Swan, which involved a year of plastic surgery. Tammy will need that.
Then you can add another 30k+ for a full mouth of dental implants, and god only knows what for bilateral knee and hip replacement surgeries.