I am not a trained psychiatrist but I very much doubt whether Sal is capable of making a full confession of all that she has done and feel genuine remorse for the trail of destruction that she and TW have left in their wake.
In the 7 months since OC's revelations first broke, there has been zero evidence of any remorse or admission of guilt by Sal and TW other than the mealy mouthed statement that 'mistakes were made'.
TSP was based on events that occurred in 2013-2014. As Sal has achieved success and fame you might have thought that she might have ratcheted back some of the more extreme claims about what happened on the walk and the impact it had on TW's health. However, even in the most recent interviews she seems to have done the reverse and doubled down on the outrageous claims!
LL was published in Jan 2022, some 8 years after the walk described in TSP was supposedly completed. Yet in LL, Sal doubles down on two of the more outrageous claims.
At the end of the book she claims that the DAT scan lit up like a Christmas tree, demonstrating beyond any doubt that the walk had completely reversed TW's CBD symptoms. A modern day medical miracle.
And in LL she doubles down on the claim that TW was repeatedly mistaken for SA in the following extraordinary passage:
I've never met Simon Armitage. He followed in our footsteps on the South West Coast Path, often days, sometimes only hours behind. For miles of the path people were waiting for a famous poet to pass their house, many of them with no idea what he looked like, just knowing he was a middle-aged man with a rucksack heading west. But in preparation for this stranger, they had made tea and cakes and all manner of baked goods to offer to the wandering wordsmith as he passed. Moth looks nothing like Simon Armitage, but as he went by, middle-aged, with a rucksack, heading west,they came out of their houses with their offerings. We were hungry, sometimes possibly starving and they'd put so much care into their baking, it would have been rude not to accept.
I would say that both Sal and TW need psychiatric help.