User blog comment:X-Machinist-X/Dishonored random stuff/@comment-26438896-20151225005652/@comment-16241899-20151225171920

Well, in the end sequence of D1 it is stated that she DOES become a tyrant following the high chaos events....

We know that in the beginning of D2 she has her throne stolen from her. Following high chaos events and keeping the player options open like in the first game, I could see her either getting her throne back as ruthless as ever (keeping high chaos in D2) or that, realizing it was her onw behaviour that caused her being kicked from her position, she would seek for a less violent approach (low chaos in  D2).