Affordable Alcohol Rehab. Where to find it?

I have about 5 thousand dollars. I would like to send my wife to a rehab for her problem with drinking and pills. She has agreed that she needs help and will says she will go. Most of the rehabs that I have called in the telephone cost considerably more than what I have. We are not Christians. I feel like I am wasting a lot of time and energy. Is it possible to find a drug rehab program in my price range? We live in Oklahoma but she can travel if necessary. Thank you for your assistance.