Since anything is possible in Ekta world, and this has become a horror show, I think that Subhi's ghost came in and magically killed Arjan because she couldn't tolerate him beating her DM. Subhi ghost wanted to take revenge on Santo because of her, DM moved Subhi's portrait in the pooja house, and her atama couldn't tolerate the fact that DM won't say monologues to her any more. 😆