She's Got Moral Courage!

Mrs Dubose holds strong to her beliefs and goals, for example, she wanted to die as a non-morphine addict. And in the end, she managed to achieve her goal despite having to go through the pain without the help from the morphine, and also the temptation to die painlessly.

-"She said she was going to leave this world beholden to nothing and nobody. Jem, when you're sick as she was, it's all right to take anything to make it easier, but it wasn't alright for her. She said she meant to break herself of it before she died and that's what she did."
(pg.123 - Atticus)