I assume that Durga will not marry Dev so soon. Maybe at the end of this serial, Durga will marry Dev. Perhaps, Durga will not marry Dev yet, because she knows what Shaurya is capable in doing. Shaurya will attempt to murder Dev again, if Durga marries Dev instead of Shaurya. But if Durga, by any chance marries Dev, this would not shock Sakshi, as she does not wish for Durga to marry her son, Shaurya. In fact, Sakshi would be relieved if Durga marries Dev. Durga has a scheme against Sakshi, which will hurt, as well as shake Sakshi. Durga marrying Dev will just be a blessing in disguise, according to Sakshi. So I don't think Durga would marry Dev so soon. She even said in the earlier episodes, that she does not want to marry Dev, because Shaurya would attempt to murder Dev once again, and he could be successful in doing so. Or, Dev would get hurt by the same. Dev, I presume, would not marry Durga as he is in love with Nitya, without being aware of Durga's actual identity.