Yep...what the others said...its her call.
Short of just quitting (oh if it were only that easy) It seems that those that try to design their own path often stumble. Its almost like looking for the magic bullet, expecting something to "work" rather than doing the work.
You may want to recommend to your wife that she gets a professional opinion...addiction Doctor, rehab center etc. There's a few different methods, recommendations and plans of treatments available, depending on what suits her best.
None of them work, however, without the desperate desire to quit.
Wish the both of you the best
((((hugs)))
Cece