^ She got in and sat down while the restraint was already closed. Remember that in early Arrow coasters, the restraights were flat. Imagine these restraints without the silver handle:
She had no idea that there was supposed to be something over her. Yes, I know it sounds stupid, but you have to remember that you don't have to pass an IQ test to ride a coaster.
For whatever reason, the ride was started with the woman sitting on top of her restraint.
From what I have been told, it was after this accident that Arrow started putting those HUGE round handles on all their restraints.