I don’t agree that the character is evil at this point after the things that have occurred in the story.
Doing good deeds is not the same as the content of your beliefs, values, and goals being good. She has beliefs about life, values about power, and goals about spoilers I don't wanna interrupt this line with that all trend toward very real evil. By the end of the game a lot of that hasn't changed. If you romance her she gets some very poignant development that could be a sort of first step in the direction you're talking about. But unless she gets a truly wild amount of content added, making her see the light so to speak just isn't actually in the cards in this game.
