It's none of these things. KC is not mentally ill, she's a liar, always has been, always will be, for what ever reason, but not for the reasons Baez is giving.
This book has NOTHING to do with KC, but everything to do with Baez. IMO.
Baez through out the book tells a story of being the under dog, how hard he had to fight and over come all the injustice that was done to him, to become a member of the bar, over and over again, it's awaysl someone else's fault. never his.
So, here he is, a rookie defense attorney, defending the most hated woman in he world, and guess what?
He WON!
In the end he lost, and that's what he's fighting for in his book, in other words he wants some respect.
He lost because nobody shows him any respect, because he does not deserve it, but he does not see that.
He lost because KC is the most hated woman in the world.
He thought after winning the biggest case since the OJ trial he would get some respect from the legal community, he got nothing.....
Like he got nothing before trial, no lawyer came up to him to offer help.
By writing this book, he's fighting for what he thinks is right.
He lies and lies all through out the book, to justify his actions to get his recognition that he feels he deserves.