I fear this will get a lot of "Just say no" comments from people that don't understand that the author is from Pakistan and most likely grew up in a completely different culture than most of us are used to. And it seems like she's not villing/able to cut of contact with her family as I would maybe do if I were in her place, but I'll never be so it's hard to even imagine what I'd do.
I am not in the "just say no" category. Instead I am in the "just say yes" category. Then go off, run away, sue for divorce, and then decide what to do. If she can safely return home, do it. If not, then there is the asylum process. Being in the US may provide many more options than being in Pakistan would in this regard.
I say this being conscious that this is a specific situation and the individual involved will have to make the decisions for herself. I also say this as someone who is probably reasonably well known here as reasonably critical of American individualism, but there are times when it can be handy and this might be one.