Nothing will help them to come out of it sooner. They have to travel this course on their own.
Under my insistance my Husband saw a therapist. I too wanted him to get a quick fix. I thought perhaps the councelor would help him to see that what he was doing was counter productive to his life. The therapist unfortunately advised my Husband that he needed to pursue his own happiness, whatever that meant to him. My Husband felt that that was the green light he needed.
Until your wife can be honest with herself about what is going on in her head, she can not be honest with you or anyone else.
The sad part is that she probably doesn't know why she is feeling the things she feels. She just knows that she has to do this, her way.
There can be no testimony without a test. I am praying to go through this test and come out the other end with a new and better marriage then before.