This does not add up to the actions of an adult who was "just" drunk and stoned. I used to live less than a mile from where this happened, and it's damned difficult to get on one of those parallel major thoroughfares the wrong way by mistake.
And she drove almost 2 miles the wrong way with cars passing her and honking.
I’m not buying it, she killed herself and others.
Agreed
My guess is she was really upset that her husband was going on a fishing trip. She probably thought he was cheating.