I'm so sorry that this is happening to you.
I think starting meetings is an excellent idea.
As far as driving drunk with the children in the car, I saw an episode of the Dr. Phil show not long ago and there is a breathalyzer type device that you put in your car. The driver blows into it and the car won't start if it registers that they are drunk. I'm not sure what it is called but you might Google it. I'm wondering if it will work for drugs. I would feel much better if my son had one in his car. I just thought of it now when you posted though.
I'm also always blown away by how many people are in the same position as I am.
KariSue