I think the CVs gave us some clear indicators in yesterday's episode:
1. MB might try to divorce RK but RK is not going to believe it and let her go. Otherwise they would not have shown her dropping so many hints, crying and saying emotional lines. She also said to RK that she would always love him. After all this why would any sane man sign divorce papers because his wife asks him to. He is bound to immediately suspect foul play.
2. The other option might be that she signs the divorce papers and leaves with Sultan without telling RK. In that case the next step would be RK searching for her with full vigour and getting her back. That could be the next step in show.
3. RK finds out what she is up to, stops her and catches Sultan.
So I don't think any of these that is : MB leaving RK and RK becoming drunk, Sultan letting MB go in a sudden fit of humanity, MB becoming heroine etc. etc. is happening any time soon.
This is my POV