Gambling ruining a marriage?

So I live in Las Vegas and I know "someone" who is a grandmother, her grandchildren live in another state and she is a homemmaker. So basically, she doesnt have a life. She has, among other compulsions, a gambling addiction. Even when her husband was laid off of work and they were losing everything, she was hitting the casinos daily. Some people do it and only tell you when they won, but lose ALOT and never mention it. To me, that is a sign of addiction. As far as getting involved, I would def. take her to a meeting, theyre ackward at first, but if you find one you like, you'll honestly find a family in those groups (personal experience with NA). Anyways, I would also pull her husband aside and tell him, without alot of detail, that youre concerned and want to help her. Maybe you can stage an intervention together for her.