I'm no expert...
*shrug*
I only know about the nature of addiction through amateur psychology and physical study, literature and film that dramatize clinical extremes, and a distant uncle or two that has a history of substance abuse. What I do know is that addiction is a very complex, multidimensional ordeal, varying from person to person, drug to drug, condition to condition.
The good thing is that the road to her recovery has begun by you getting her into detox, but it can't stop there since many addicts will visit detox more than once if they don't get additional help. It is imperative that treatment continues with personal, family, and/or relationship counseling. If this particular clinic doesn't have such components, ask for referrals.
This is because of course, as you said yourself, these are trying times, and most addicts and their loved ones feel awkward and disparaged about going back home and trying to either return to normal or begin anew. Seeking professional counseling is not something one should ever feel ashamed of. A "shrink's" methods to thought and resolution are quite organized and very effective.
The best thing you can do now is keep giving her love, support, and reassurance. Also, educating yourself on what addiction really is and how she is affected is going to be a big help in soothing your own anxieties and understanding her and the situation better.
"Addiction is not an aberration from our way of life, addiction is our way of life." -- Stanton Peele
Changes this big never come easy, but recovery is possible with that same motivation and strength of will that gives us the power of making right choices and getting back on our feet. I feel that the healing process will benefit you both greatly.
I leave you with a couple links for further inquiry...
http://www.atforum.com/
http://www.addictionresourceguide.com/
Wishing the best of health to you both.