Hello and thank you for your question.
I can understand your great concern and frustration over your wife's behavior. She is clearly showing all signs of addiction. You really need to take this up with her doctor's and call them about this, so that they are aware of her addiction.
Also, you need to get counseling in your area, so you can learn what to do to best support her, while also not enabling her. Counseling is really required here. Which city or town do you live in?
Please if you would like, tell me where you live and I can help you find a really good counselor for you and/or for your wife. Thank you,