I am sorry of what you are going trough. I have no children myself, so I may not be qualified to give youa dvice. However I think you did everything you could do with your daughter and if she is drugging and using then she needs to hit rock bottom as we all learned and has to find her end of the road. And I know how hard it must be as a parent to watch. You should focus on your recovery as your major priority, sine if you go back to your old ways you cannot help her at all. As she is still missing maybe try to file a missed person report and hope the police will find her? Please let us know and keep us updated.