Did she have a very valid point to make at the end?
When she angrily and sadly stated to her friend that she was sending "a victim of sexual abuse" (her) to death (remember her "May you burn in hell" speech), even if in this movie, the death penalty wasn't carried out "FOR" that reason but DESPITE that - but was Charlize Theron's character here implying that the law should STILL have been by rights, law (yeah, that too) and logic, more understanding and compassionate given her sad history and that aspect too, and not simply give her a death penalty like that?
And that her friend should've been far more careful and considerate here?
So that for one, besides also not WANTING to be killed whether despite her sad history or because or even DESPITE she also drove herself to the dark side as well, both her friend and law as potential "good guys" can look better and more civilized as well and not just say primitive, barbaric, animalistic, whether deliberately maliciously (which is what we ESPECIALLY want to avoid!) or even via circumstances (remember also how, different story perhaps, and incidentally it was a man there albeit a black man in a racial 1930s America, in "The Green Mile" (1999) - SPOILERS, was sent to death row (even if he did NOT protest it and actually ASKED for it, unlike Aileen Wuornos in this movie) even when some staff members actually DISCOVERED his innocence, even if via supernatural means) as well.