I also like this outfit on Ishita. But she often looks good and pretty. But would be nice to pimp up her wardrobe a bit. The Bhalla's live a plain and simple life but the CEO's wife can at least occasionally dress up.
The scene where she is back in her old room, opening and closing her closet, it was like symbolical. All what was said and done (or not said and done for that matter) did not only hurt her but the fact that she thinks her 'dream' of having a normal family went to smoke was perhaps more hurtful. As much as Ishita has told herself this all was for Ruhi, she did confess it was not enough anymore.. She wanted a child but also the husband and family which comes with package. Being back in her old room and seeing her clothes before marital life, make her realize more what had happened. She does not want to go back to her life without Ruhi and Raman. Being a mother and the wife of the changed Raman is not something she can stop like that.
Perhaps what could happen now, with the police and child care on its way, one more time Ishita will have to move back to Bhalla's or... All 3 of them will move at the Iyer's or... Get a hotelroom for some time... She will play along because she will not allow it that Ruhi is taken away again...Again sirf Ruhi ke liye she will do everything.