The mix of people each season on MSHPL and similar tends to usually include a couple of complete fails, who must come up in psych testing - nobody would have put any money on Steven Assanti losing weight, for instance. He'd been chucked out of every hospital for refusing to stick to protocols.
However, the show is selling us a story and a specific doc taking enormous risks, and the surgery is still paid for through insurance. So anyone wanting to go on needs insurance (Big Albert may think she can pay out of pocket but she has no idea how expensive specialist surgery is) and to be cleared by that insurance for the op. Insurance isn't keen to fund very expensive failures.
The other thing is that MSHPL patients have a much, much higher success rate - usually, long term prospects are dismal. The show gives us a carefully curated set of people who have been specifically chosen for their likelihood to fulfil the redemption arc beloved of US TV and they usually are either young or have a very strong, specific drive to succeed, such as children.
Gorl doesn't fit the successful roles so, if it WAS that show, she was likely considered as one of the potential fails, and there are only ever a couple at most per season. If the show resulted in a series of fails it would make us question why these extreme surgeries are even being done, and they already have to account for unknown factors such as a strong candidate failing or the ultimate unknown, a patient dying.
The ones that succeed do a whole hell of a lot more than we see and probably have to sign all sorts of commitments to therapy, dieticians, physios, fitness instructors etc etc. I think we all pick up on AL not really wanting to change if it involves effort - she'd choose thin if the Flab Fairy came and sucked it all out of her overnight, but what she really wants is to eat with no consequences and no criticism. Too many of those in any season and viewers would turn against the programme, not to mention Doc N really doesn't want a series of fails. So I guess if it WAS that or anything similar, she was only ever an outside chance as one of the expected fails anyway. And they no doubt have a whole load of those to choose from, all of whom at least have the basics like insurance.
Tl

r She failed at being a fail. Happy noo year, gorls!