Soza simply stared at him and blinked for a moment. Not that she didn't understand the question, just that she didn't understand the possibilities. 

[b] "Quite honestly I have never known anything outside of my dwelling, or the stories that my keeper tells me of the sacrifice. I don't know what I would do... I don't know what there is to do. You are the first person to speak to me of things beyond these walls... My keeper says that such conversations are forbidden for the Ssussun." [/b]

Whether he was catching on or not was one thing, but all of her comments added together to a relatively clear picture - they told her nothing and showed her nothing beyond what was intended for her so that she never longed for anything other than what they told her was her purpose. She wasn't 'suffering' per say... she was merely contained and kept ignorant in a way that kept her from ever wanting to rebel or escape or find or learn. It was a very careful and calculated way of handling these persons born among them who they knew would only be used for this purpose in the long run.