There is a good premise here, that someone brought into a Taliban-like group may have misgivings when pressured to do objectionable things. Further, the interaction with the foreign hostage may trigger these doubts. This was one of the themes of "The Crying Game", among others.
But this movie makes so many foolish decisions and has its characters behaving so implausibly, it just smells like Hollywood in the mix.
We can see how ridiculous this movie has become when we compare the movie's journalist with actual journalists who were captured. There are clear ways that informants on the other side are protected, and that protection is part of the returnee's debriefing. The setup we are given here, of a journalist fearing that her lies would be disclosed, is so preposterous, it is clear that no real journalist was shown a script.