I guess I would have to give Hannah the award for most honest, although I believe that honesty comes from her age more than anything else. At the novel's opening, she has no problem conveying the fact that she has no interest in the seder and is completely bored with the entire gathering.
After she is transported, Hannah continuously tries to share her knowledge with her family. She tries to warn them about things to come and even protects them. Her death is the epitome of an honest life, and because of her sacrifice I would also give her the award for most courageous.