There really is no mystery. The facts are quite clear, she was intoxicated. It may be a mystery to the family as to WHY she was intoxicated, but there should be no question as to the fact that she WAS intoxicated.
I feel for Daniel and understand that it's difficult for him to accept his wife was drunk, caused an accident and took eight lives as a result; but, the sooner he comes to terms with the reality of what happened, the sooner he'll be able to move on with his life. And, frankly, the sooner he moves on, the sooner everyone around him, especially his son, will be able to move on as well.
It's a heartbreaking story, but a very well done documentary. Definitely worth a watch.
Don't drink and drive, people.
Don't drink and drive, people.