I think that if SW had resisted swiping the £600 cash, she would possibly have managed to keep embezzling money from the Hemmingses for much longer, potentially.
But as they don't seem to have been using the money to pay off the loan against the house, I suppose it would have been repossessed anyway?
If TSP hadn't become a bestseller, and had only sold the small numbers that might be expected from a debut memoirist, I suppose it's possible I still might have been given a copy, and thought 'Hmm -- weird' about the lightly sketched court case and googled, and noted that not only was there nothing on line about any court proceedings involving Raynor Winn, she didn't appear to exist before the publication of TSP, but, for the absence of evidence, I couldn't have gone further, and would have put it out of my mind permanently.
And I'd never have known other people had the same response, or thought it was a deeply odd piece of writing, with all that ill-concealed ire aimed at other people.
If it hadn't been a bestseller, it's possible it wouldn't have come to the attention of whoever alerted CH to things not being all they seemed.
And even if the same person did alert CH, I doubt she would have thought there was enough of a public interest angle to merit publication if the book was an obscure one.
I think RW's omnipresence in the media, at book festivals etc probably did something to help it to bestseller status via word of mouth (as, obviously, did PRH's big publicity push), but I definitely also think that the fact that the media and her readership apparently accepted uncritically the claim that walking improved TW's condition probably did a lot towards encouraging SW to turn the tentative diagnosis and improvement in TSP into claims that he definitely had CBD and that the SWCP definitely cured it magically. It 'hardened' her story and made it much more miraculous, and she leaned into that in the sequels, as well as into her new identity as salt-stained, mystic sage of the coast in Arvon teaching, Gigspanner etc.
If she'd largely avoided doing publicity, or did the minimum required contractually, it's possible TSP wouldn't have been a bestseller, and that she wouldn't have walked herself into a situation where she'd leaned into the 'miracle cure' narrative. Which, when she wrote the sequels, she appears to have thought she needed to lean into still further.
If there was only the text of TSP, without the interviews and sequels, I think she could have defended herself against the allegations that she'd made false claims about TW's health by saying 'Look, I'm quite clear in the book that the consultant said CBD could only be diagnosed at post-mortem, so yes, it's perfectly possible he doesn't have it. I'm not a medic, and was going with the information we were given at the time.'
Which would have made the 'TSP was just a capsule of our life, not all of our life' defence more compelling as well.