depending on where you are. you get her just after she dies, or on the 3rd disk when you get in the northern crater. If your later on in the game and want her sooner, use the chocobo black save editor. Its a good lil program and simple to use. just tick her in the character editor tab. if you have any more quires read the previous posts because I had the same issue. Keep Aeris alive!!! best limits!!! =]