From what I recall reading about the incident when it happened, the airplane did have the usual red beacon lights that normally indicate that the engines are ru

From what I recall reading about the incident when it happened, the airplane did have the usual red beacon lights that normally indicate that the engines are running, and the crew that the woman was a part of had received multiple briefings about both safety around running engines, and this specific airplane. The airplane had a non-functional APU, so they kept the engines running longer on the ground until they could get connected to ground power. Normally with an APU operable, the flight crew could start shutting down the engines much sooner, such that it would not have been nearly as hazardous to the ground crew. That's probably what any sort of civil suit will go after -- if AA had spent the time and money to have the APU fixed sooner, the dangerous situation could have been prevented and the woman that was killed might still be alive.