if it would've been a real life situation, i would've thought the same as u but we know that this is serial n we know nehmat's point of view. He hear her monologues. She just wants to be mahaan that's it. Makers want us to believe that nehmat is mahaan. But her reasons of being mahaan are lame. How can she look mahaan if she forces ekam to marry an already married girl dhokebaaz (apparently) Harleen? How is it mahaanta? Can someone explain me? Makers think that self destructive people are mahaan. But it's not true. N here, nehmat wants to ruin not only hers, but also ekam's n Harleen's lives too. But still makers wants us to think that she is mahaan. Only harleen is mahaan right now in ud. No1 else is mahaan, not even ekam right nowDon’t think nehmat is being mahan. To me it looks like that she cares a lot for ekam but doesn’t want him back.
But woh Gale pada hai. And her family also trusts his love for her a lot. So she can’t get rid of him easily and hence pushes him off onto Harleen under the pretense of mahan sacrifice.