Air Bag Not Deploy problems of the 2007 GMC Envoy

Sunday September 6, 2009 my wife who is 8 months pregnant was involved in an auto accident as well as our 4 year old son in our 2007 GMC Envoy. She did not see a vehicle as she was crossing a highway and was hit on the drivers side of the vehicle just behind the drivers door. The vehicle that collided with her was traveling over 60 miles per hour as my wife was traveling only about 5 miles per hour as she just started through a stop sign. The car did 2 complete 360 degree turns and then flipped over on its side. The air bags never deployed during the impact and the engine was still running when the vehicle came to a stop on its side.