People using Historia as a sacrifice. As her father wanted her to eat eren, so does the mps wanted her to eat zeke. Repeating the cycle all over again.
Leaving Histotia no choice but to accept her fate, sacrificing herself even if she want it or not. Some Krista thing.
Yet a words of someone reminds her of who should she be and who she really is. To choose what she really want.
Thus, leading her to a decision out of her own free will. Saving Eren and bearing a child. Some Historia thing
People didnt seems to understand a thing about historia, leading them to conclude that eren manipulated her or historia bear a child as a strategy but unfortunately that's not the character of Historia. She is free and strong, she is the worst girl in the world.