Whatever MM will do infront of Abhir, be it insulting Akshara, announcing Ab-Ar marriage, humiliating Abhinav etc etc is going to follow Newton's 3rd law- it's going to be opposite reaction.
My theory is she'll announce wedding news in Mimi's birthday party. Then without consent of Manish(this time too) preparations will start. Abhir might be diagnosed with some heart disease (I don't want this to happen). AbhiM is on leave for the sake of preparing for his wedding. AbhiN tells the truth to convince AbhiM.
After surgery, MM would gaslight AbhiM for Abhir's custody. Somehow AbhiN is shown obsessive of Abhir. So, now the court drama starts. Custody will be granted to Akshara and visitation rights to AbhiM. Somehow while saving AbhiM, Nav dies and Abhir is angry with all the Birlas.
( Or)
I want At or MM to be the reason behind AbhiN's death.
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