2001 Volvo V70XC cruise control problems

My daughter was killed while driving my volvo when it malfunctioned and she lost control. Per the accident report, she was changing lanes from the far right to middle lane when she accelerated into the left lane, hit and bounded off the left guardrail, collided with a car in the center lane, proceeded over the right guardrail of a bridge, through a treetop, dropped 30 feet, landed upside down, and rolled repeatedly, eventually stopping in a concrete creek bank.

I got my car back from the volvo dealer yesterday after having them look at it yesterday because it wasn't running well. They told me that I might need to replace the electronic throttle module, but not to do it yet. Today I went to drive the car, warning lights came on saying "check engine" and "performance reduced" the car would not idle after driving less than two miles and had to be brought back to the dealer (portland volvo, south portland, me).