My husband took xanax. He used his social anxiety/panic disorder to abuse them. You know "well, one just wasn't enough, I was freaking out so I took 2 more". Those types of excuses came frequently and those numbers increased in quantity in a hurry.
I laid down some new boundaries which made them particularly angry (e.g. I would not see them alone, without the support of my husband).
Your doing good. ((((how)))