I understand that the itemising of 2 unwed people is haraam in Islam, but I also believe in being a step ahead I guess which is why I'd like to one day marry this girl, however I also understand that the salat Ul istikhara is for decisions permissible in Islam. How can I use Islamic principles to show her that marriage is the best option and that however long she does this istikhara for it won't help her to choose whether I'm right or not for her..?