First, I, too, doubt she has a lawyer. You'd have heard of it before this.
Second, I would ditch the breathalyzer. Too much drama, it won't prove much of anything, and it's not good for your child to be involved in "mommy's results."
Third, bringing up your mistakes is a classic diversionary technique.
Fourth, yes, she needs to list her resentments as part of her fourth step--including those she has against you, whether they are justified or not (incidentally, the whole point is to recognize that the resentments indicate HER problems, not yours). Step work does NOT involve her sharing her resentments with you. The only one she shares those with are God and her sponsor.
Are you going to Al-Anon? If not, I strongly suggest it. You should not be policing her with a breathalyzer--for the sake of your own well-being.