Have you ever been to Burma/Myamar? It's not this conservative little nation with everyone in long clothing shuffling about with their heads down. It's not as different as you might imagine.
RZ didn't typically wear modest clothing so I don't think it's fair to judge her by Christian Chin standards unless that's what her family is hoping we'll do, because her lifestyle didn't pass the muster.
Now I'll tell you what was interesting (and disturbing). In the comment section of an article I read, someone who identified him or herself from Burma wrote things to the effect that Rebecca had to "pay" because she lived an immoral lifestyle. The person listed some things that were considered immoral, including the fact that she married a white man (her first husband). The person said it was a "sin" for a Chin to marry a white person and that's why RZ had to pay. So if RZ was murdered (and I don't think she was, but I very well could be wrong), I would wonder if someone from her former country did it to exact judgement for her immoral lifestyle (not my words).
IMO