Hm... I guess, my trouble is I don't get it what disturbs you about the way the story's told because I think it's fine. Maybe not free from plotholes or technical discrepancies (the scene of her digging herself out of the self-made grave of her father and half-brother made for her is such one - pretty unrealistic, especially for someone who is wounded), but following it those two paths I find it way more interesting than if it had been a simple movie about a little outstanding court case seen from someone of the perspective who can only witness it as a court case.
If it had been protrayed as this - would there be much point to watch it? Because there had been a couple other movies before like this.

The last interpretation that I can leave behind here is: I guess the author of the books wanted it to be larger than just a court case. He wanted to show something else.

And... at all, what one can't deny is: It's no popcorn content, you've got to pay a lot attention to what happens, so that you understand why suddenly this or that happens or is even possible.
It's not a series of movies to watch just for entertainment.


(If I may have misbehaved here, I'm sorry for that...)