Whenever I leave the ship it says "Parvati has left the party." I am on supernova difficulty, I'm not sure if she would revive if on a lower difficulty. This does not happen with other companions. 

There are more details and others with the same bug here. 

I hope there is some solution or patch soon, thanks. 

There seems to be a lot of issues around Parvati and the game deciding she dies for no reason (see other threads about her).

I didn't find this thread when I searched initially, and just posted that I have the same problem.  I have a manual save where she is okay, guess I should continue from that and see if I can avoid it again going forward.