Of course, if enlightenment is the taking up of the universe's lack of perspective, as it were, and the universe feels no pain or pleasure, then neither would the enlightened person have those feelings. In so far as the universe can metaphorically be said to be at peace with whatever occurs in it, because the universe is mindless and has nothing to fear, being everything anyway, the person who detaches from her personality and adopts that vacant acceptance of all beings and events would have the same peace or absence of interest.
But isn't that like the child in drama class who's told to act like a tree, so she stands there and puts her arms out and pretends they're branches? The enlightened mystic would still be acting as if she were the living death of natural mindlessness. Her peace would be a simulation of the inhuman flow of lifeless events.