I think Boa will have an instant heart attack and she will go in Coma only for a few hours, because her bechain aatma will not let her rest in coma too, so she will wake up and apply mirchi ka aachar on herself to make her skin glow with red hot jealousy, then she will take a dip in aag ka samundar and do a tandav swim and chant mere shaitan ki kasam (she has disowned the bhagwan so no longer bhagwan ki kasam). Shaitaan will be pleased and propose her leading to Boa's punar vivaah