How Come Haseena Bi in Dilshad's house functions

Guys this seems a bit unnatural how come Haseena bi in Dilshad's house family function

come on a few days before she even didn't know who is Asad Ahmed Khan who's Dilshad's hubby and vice versa. now she's in their house function.since when they're related to Haseena Bi.

i'm a bit confused. if anyone has the explanation please share it so that my confusion can be reduced

Thanks <3

haseena bi comes to dishad house with her bhabhi jo dishad ko janti hai