1998 Chevrolet Cavalier air bags problems

When vehicle was involved in a rear end crash, traveling at 55 MPH, both air bags deployed. The hot gases from the driver's side air bag burned the driver and the passenger. The driver's right arm was burned. The passegner received burns on the chin/wrist/elbow and inside of the right arm. The vehicle has not been repaired.

(1) my cousin was driving her 1998 cavalier when she was struck head on by an oncoming vehicle (2) her driver's side chair broke lose and her seat belt came out of its fastener and the metal "hook" striking her body resulting in a laceration. Her body was then throw forward with such great force that she hit the windshield with her head twice resulting in a concussion, black eye, swollen forehead and other cuts and bruises.