Zainab and ushna clearly knows what's happening in that house and they are letting it happen. Why isn't zainab or ushna says they will no longer attend Naima and will keep their distance from her? Wahab clearly said he will look for a home nurse if zainab don't want to look after Naima. They are clearly giving more and more chances to Naima to create problems. It's not like Naima can walk and go after them if they don't come to her.
Wahab is one more empty vessel making the sound just to target Zainab, rest others are not even bothered about him. He isn't allowed to take any decision without consulting maa-beta, he just said it to sunao Zainab. He is a useless puppet who has to dance as per Naima and Shehroz's tune. I won't be surprised if he's taking Naima's permission before using the washroom . Zainab will never give up Naima's responsibility as she's too desperate to save Ushna's marriage, but I don't think Ushna gives any flying F#&k about that marriage, she can give up Naima's responsibility on Zainab's behalf

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