Honor As A Downfall?

I'm working on a fantasy where the heroine's major moral feature is her honor. I would like this to be both her heroic characteristic and her Achilles heel.

I am working on a way for the villain -- or possibly more than one villain -- to have her in his debt, honor-wise, and therefore have to accomplish a task for him, which will, if she fails, end her life, and if she succeeds, get him something he wants even more than her death.

I'm close to something, but it needs a little more time. We will see how things work out in the end.

I think honor can be a downfall, if other people are not honorable. But in the end, of course, it will be her best weapon, too. At least I hope so.

~Alice M. Roelke~