<font color="#990066" size="2">Because Zoya doesn't know that Asad is informed about Marriam's rape and she was getting married to her rapist.</font><font color="#990066" size="2">For Zoya, Asad is a traditional guy and would never appreciate her helping Marriam. She is now sure Asad will not give her a chance to explain all this to him in a cordial way.</font><font color="#990066" size="2">To top it all, Asad clearly told her that if she helps Marriam any further, no-one (including him) can save Zoya from Panchayat goons.</font>
I completely agree wid u... I guess u got ur answer Priya... U must hav missed this part :)