1) the family isn't a green apple. You only see it as a green apple just like she only sees it as a red apple. Instead of convincing her it's green, you are only going to drive her to set in that it's red. Stop trying to convince her. Try to validate her opinions and empathize. Don't make her see your side; understand her side.
2) drug addicts don't respond well to telling them they're wrong, explaining the problems of drug use, taking away their drugs, etc. They need to experience firsthand the lowest of lows. On their own. Stop trying to control her.
