Here lemme try to explain what am thinking.
Dilshad appeals to Asad to accept that he loves Zoya. Asad refuses and says he doesn't and he'll get married to any girl of Dilshad's choice.
With all the pressure piling on and her son being so stubborn Dilshad decides to take matters into her own hands and make her thick-headed son realize that he's in love with Zoya.
She points at Tanveer as the girl of her choice.
She wants Asad to arrive at conclusion that he can't live his life away from Zoya, with someone else.
Now, you might ask why the round about route? She could easily point at Zoya and let everything fall in place.
Well, it totally kills the purpose then.
Asad will get married to Zoya, because his mom wants him to. Not because he realizes that he wants to.
Thats two birds with one stone from Dilshad.
#Get Asad to realize his feelings and marry Zoya.
#Prove dumbo Shireen and Reptilian Razia wrong.
Did I make sense?