Maybe if you had love for all people, even if they come from a Muslim country you could be optimistic for your friend. But you come across as anti-Muslim eg. your YouTube link to a channel called Halal Pork, which I don't think was particularly respectful to another religion even if you are against it.
Why do you think your friend is unintelligent and cannot think for herself? When people have been through a lot they tend to be more sensitive to things, hence less stupid in making choices than others. Maybe you are worried, but all you will end up doing is pushing her away with your own fears. It is actually more important that you are accepting and loving about her own choices, if you want her to be loving and accepting about your thoughts. But are your thoughts based on love, or are they distorted by mainstream anti-Islam rhetoric?
I have to be blunt with you, sorry about that. I know you, Magenta, Blue_Ladybug support any kind of anti-Islam rhetoric here, but try not to make it racism even though it is really. Just try and be more loving if you want to get through to your friend, and if you want to KNOW MORE about the situation and whether she is safe. Has she even spoken vocally to him or been on webcam? You didn't mention any of that. But I get the feeling she has. Stupidity is meeting someone you have never seen or heard and I doubt that is the case. But if it is the case, then THAT is your point of conversation, not 'Pakistan'. She is less likely to share anything with someone who tells her Pakistan is dangerous, Pakistan is Islamic State, Christians die in Pakistan, etc. Love or fear, one is better than the other.