Did the girl or her family talk to that man? Did they convey their wishes? If not,then there’s no need for your friend to bare the entire consequence..
Would’ve made sense if they’ve talked and then asked for your help.
Leave this city ASAP!! If you cannot move out of the country at the moment, move to a city where none of your family or relatives can imagine you to be in… always be alert ,apply for passports as soon as you can … Even if it’s a bluff ,murder threats should never be taken lightly…