I'm skeptical as heck. For her not to have expressed her outrage at the death of her interpreter tells me something. Stockholm syndrome is such a convenient excuse. If it isn't what it appears to be (and I don't think it is), it is either something she may have helped engineer for terrorist propaganda ("My life with the jihadists"), or hopefully she's an intelligence plant to find out where the bad guys are. My opinion is that there's something not right with this lady.
If she's saying the same things when she comes back to the US, then I'll be skeptical too. But I just feel like while she's in Iraq, she probably wouldn't want to say anything too derogatory to other Iraqis.