She needs to find some other thing to obsess over. Saving people in communist countries is hardly the ONLY charitable thing available. Surely there are people in her home country that could use humanitarian aid and Christian saving.
It sounds like she has got hold of this idea in her head and won't consider alternatives. It might work out for her but if she is a positively diagnosed Celiac and knowingly goes into a country where she will have little control over the quality of her food (in or out of prison) then her ambition to do this thing is bordering on pathological because she is discarding her own health in favor of the idea.