I know there isnt a perfect question. But my friends macbook air 2013 has a swollen battery and she's afraid to turn it on. she wants to dispose of it/recycle at apple store and get a new one. But she's afraid of giving it to apple with years of personal data (im not sure if its even backed up) that a technician could look at. But as stated above, she's afraid of turning it on to wipe the data herself first because of the swollen battery. any advice or tips?