How can I find a recovery center for my sister with dual diagnosis?

My sister has been abusing alcohol ever since she lost her husband a year ago. I even suspect she has dual diagnosis that we even can’t seem to name since she refuses to seek some professional help. I’ve been trying to convince her but her doubt in alcohol rehabs and medication always resurfaces. She says that treatments can never do her good, and she knows that she will eventually resort to relapses. She is always anxious, pessimistic, and obnoxious that she always scares away her two kids, one is 7 years old and the other is 4. It is for these two angels that I want her to undergo a treatment. If she ever agrees, will there be a treatment center that can address her behavioral disorder? Any ideas?

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