She thought it was a good idea to nap next to a gas pump right before an imminent storm from the Nucleus zone. She could've turned into a sickass giant mutant like some, or die like the rest, but the radiation gods proven once again they can have a twisted sense of humor.
She now travels around, offering cheap refuels for your rusty handmade buggies. Granted most people flee when they see her so it ain't no easy feat.