Air Bag On-off Switch problems of the 2012 Nissan Sentra

I was in an accident in November. The passenger airbag failed to deploy and the driver broke their nose and then fled the scene. I was unconsious in the passenger seat when wmts arrived and do to the driver fleeing I was charged with the accident and insurance failed to pay the settlement. All on claims that had I been in the passenger seat the airbag would have went off. I know that Nissan has airbag problems all around the year of my car but am trying to find if any of these defective parts are in my car and could have caused a non deployment. The cops estimated that we were going 50 mph and hit a tree. I was asleep in the passenger seat so am not sure of how my body was positioned if it had effect on the pressure switch. I was severly injured 4 broken ribs broken nexk and multiply facial lacerations from the passenger side windsheild.