Take a 3-4 week holiday interstate or overseas bro Gucci. Just tell her that you have some work to do. It gives you time to to think clear, to readjust and to have good reasons to stay away for awhile. Hopefully when you get back, you will be able to say goodbye but still remain in good terms.

IT may be too late I feel, for you to influence her to run away from gamblings and drugs. - I suspect the reverse has already happened. She has dragged you in her way of life but I dont think it is too late.

If you truly feel for her then help her. But if you dont, then as other brothers have suggested, leave NOW before it is too late for you.