Many times throughout my playthrough of DKS i was wondering if i was ever going to meet commander Rhode in a battle, especially after i killed Marius and the rest. Unfortunately, there was no sign of her until i reached Aleroth, and listened her referring to me as "IT", that is when i thought "yes it has to be now" but no, to my disappointment that guard arrested her.
It was a shame really that i never had a chance to kill her at the end of the game, but then i started FOV and learned that we are on a same mission, and that she has been released from prison, so we have to meet at some point during the game, only to find out that she has been turned to stone by Bellegar.
So now i finished the game feeling a bit disapointed, it is unfair really considering the fact that you can kill Marius twice. Pity. =(