I'm starting to think that the defence team, bamboozled by all of the experts, probably believed that she was guilty.
Now of course, defence lawyers have to defend people who are bang to rights the whole time. I saw an interview with a barrister once who was asked what he did in that sort of situation, and he said "As a minimum, our job is to keep the police and the prosecution honest, if only for future cases". In other words, make them work for "beyond reasonable doubt".
But it can't be easy. Imagine you are the defence lawyer of the unsuccessful 7/21 bombers, or the accomplice of the Ariana Grande co-conspirator, or Ian Huntley. There's always some hothead who thinks that very very bad people shouldn't have legal representation, even though barristers are assigned on the cab-rank system (even if you have a private solicitor rather than legal aid). Indeed, one of the smears levelled at Keir Starmer before the election was that at some point he had defended some particularly unpleasant individual in court, although he would have had no choice in the matter.
So there will have been a lot of pressure on the people in LL's defence team. They will have known that it was the case of their lives, and that if she had been found innocent, the mob would have wanted answers. I don't know if this caused anything to change consciously, but it can't have helped their degree of diligence.