I would really advise Al-Ateen for your girls. They're going to need a face to face outlet to get support from someone outside the family.
You've already gotten the 3 C's of addiction, so let me post this:
Actions speak louder than words.
You probably already know this seeing as you're sick of the "I'm sorry's" your wife utters. Words mean jack sh*t (said with the conviction of someone who was married to an abusive alcoholic). If you want to know what's really going on, look at actions.
Also, I would advise you to start thinking about your boundaries. What behaviour will you tolerate in your marriage and what makes you put your foot down? Once you figure that out, it's time to enforce your boundaries.
I hope you stick around and post lots. SR is always open!