beholden to nothing

Harper Leeの 'To Kill a Mockingbird' を読んでいます。

I wanted you to see what real courage is, instead of getting the idea that courage is a man with a gun in his hand. It's when you know you're licked before you begin but you begin anyway and you see it through no matter what. You rarely win, but sometimes you do. Mrs. Dubose won, all ninety-eight pounds of her. According to her views, she died beholden to nothing and nobody. She was the bravest person I ever knew.

"beholden to nothing" の意味を調べます。

・Oxford English Dictionary: beholden to somebody (for something) owing something to somebody because of something that they have done for you: She didn't like to be beholden to anyone.
・Collins Dictionary: If you are beholden to someone, you are in debt to them in some way or you feel that you have a duty to them because they have helped you.: He was made beholden to the Mafia.
・Cambridge English Dictionary: feeling you have a duty to someone because they have done something for you: She wanted to be independent and beholden to no one.