I'm really sorry to hear about your wife, and the pain you all must be going through. I'm a Professor and my research area is sexual assault prevention, so I have seen more cases than I care to remember that mirror your story. Many survivors repress or completely forget what happened, and it can resurface years later. Using drugs or alcohol to cope is not at all uncommon. As others have mentioned, approximately one in four women are sexually assaulted in their life, and I'm sure there are similar statistics for physical and psychological abuse. In most states and communities there are abuse hotlines, and you might consider calling to learn more about what she is going through and find some support groups as well. I also hope you are able to find a therapist who has specialization in this area as many well-meaning therapists and spiritual leaders simply don't have the expertise to counsel abuse survivors. On a positive note, this may be a real turning point in her healing process--the healthiest way to deal with pain is to go through it. She is fortunate to have someone like you in her life during the process.