Not only is rehab not a magic bullet and she has to want it, but if she is dead set on 'rehab' tell her to contact the "Salvation Army". She doesn't need money for that, it is free, to those that really want recovery, and it has a pretty darn good track record.
J M H O
Love and hugs,
ps: with her attitude, I wouldn't pay for her rehab at a 'for profit center' right now, if I were you. J M H O