I wouldn't tell her about the lawyer. And I wouldn't worry about what she may or may not be thinking, whether it is a test or whatnot. You'll be wrong most of the time anyway.
Nothing is going to happen right away anyway, so take a deep breath and try to relax. You've got time. Just be cool and expect her words and actions to try to mess with your head. Fight it, and fight it hard. Know that YOU are the one who is the responsible one for your family. SHE is the addict, and you will have none of her BS. Act strong and confident, and let that start messing with HER head for a change.
WAW Using God Me-43 W-40 M-14 S-11 S-9 D-7 EABomb 5/09 Separated 12/09