She is the one interviewed, not you, so she should not volunteer information. She should just answer the questions they ask. Make sure you and your fiance discuss all types of things ahead of time, like whether you will have children, whether they will be raised Muslim, whether you will get married in a mosque, what will she do in the US , will she work or study? Know each other well, because they will ask her things like what do you do for work, and things about you to see how well she knows you. If you are both on the same page about what you understand about each other and she answers honestly, coming across sincerely is the best thing.
https://www-consulat-ma.translate.goog/fr/casier-judiciare-pour-les-etrangers?_x_tr_sl=fr&_x_tr_tl=en&_x_tr_hl=en&_x_tr_pto=sc
https://www-consulat-ma.translate.goog/fr/retrait-de-la-fiche-anthropometrique?_x_tr_sl=fr&_x_tr_tl=en&_x_tr_hl=en&_x_tr_pto=sc