well guys according to me i think on thursday episode when ranbir propose kanya and kanya is still looking on her right side ,
i think she might look at some candle and as we all know that after looking at fire she become naatashah.
but on the other hand i don't think that it is a rite time to reveal the naatashah character,maybe when kanya is looking at candle,pammi the mummy watch her and came betweeen kanya and candle or maybe after seeing candle ,she become faint and when she came back in sence she is still b kanya(coz in the earlier episode when kanya nad ranbir are in Godbole house and electicity was off and kanya looked at the canle ,she become faint but when she came back in sence she is f9 as kanya.)
so hope something good can happen