what a sad thing....
last night my husband picked me up at work and was drunk.... at the first red light, i jumped out of the car.... he tried to get me back in it but i told him i refuse to drive in a car with someone who is intoxicated...he let me drive. and i promised myself i'd call the police the next time he does it. i often fear what happened to your aunt will happen to him too. and i know for sure he would not be able to live with himself afterwards.
so sorry for your pain....