Spoilers
Yes, she's grown to be very bitter in her ascent to power. I wouldn't outright call her cruel, but she can be very ruthless in dealing with problems. She also carries a lot of hate for a lot of people (especially herself).
That's all I can say, otherwise I would be revealing some stuff I don't want to reveal just yet 🙂
Hope you found someone to like among the other characters though 😊