It costs Nicholas nothing to perform the Secondary Ability of this Strategy Card since he has the "Initiative" Strategy Card.
The only exhausted planet he has is "Mecatol Rex", so he refreshes it.
Steve has no exhausted planets to refresh.
Everyone has exercised the option to play the Secondary Ability from the Strategy Card Melissa chose. She flips the Strategy Card over (Inactive) but leaves it in her area.
The game turn resumes with the next player action in order as specified by the numbers of the Strategy Cards.