Like DivineMAGE and Vometia said, I would rather have her as a sex slave

as punishment or leave her as an undying statue that is able to see what is going on around her and use her as a coat rack
Well as for my Dragon knight, it would be just wrong to want hill thing to happen to someone who have such high value of duty. Yes she dosen reconize you as a friend and she have the nasty habit of calling you name.
But between you and me i would totaly prefer to have damien or Belegar as a ornement to my tower, the tow of them are just being unredimable asshole to my Dragon Knight.
The only way i see that we could safe guard C. Rhode is by opening up her mind magicaly. Think the Divin got some spell call "remove Zelott on other" in his action bar? That or lock her up in a prison and having a nice very long chat with her.