There are cultures where breaking a promise is disgrace beyond belief -- leading to interesting contortions when the character makes one rashly.
And then there's the possibility of being released. Of course, in some cultures, that's disgrace enough in itself, being dismissed as unneeded or unwanted, or not worth it. And if you ask for it. . . well, you might get it readily, because they would be delighted to wash their hands of your very existence.
Which makes it truly interesting when a character is pondering how she could have her freedom for the asking -- and with that, ensure someone's undying contempt.
