She took her young son out in the car with her to buy beer after downing vodka and pills. Please do something for the sake of that 13-y/o boy. How would you feel if he dies in a car wreck? At the very least, talk to him about getting in the car with her. If she persists, call child protective services. This is serious stuff. It's one thing to risk your own mental/emotional well-being, but that kid doesn't have much choice.