Missing Daughter

I have a daughter, she is 19. We recently found out that she's been using heroin for 3 years....How could we have missed it.. She left the house without ID or phone, we do not know where she is, it's been 12 days now. She missed her trial hearing (possession charges)yesterday, now she has a bench warrant...
We have offered every help, including attorney but she just blew it....It is so heartbreaking, not knowing where she might be, what may happen to her....She has a family, two younger brothers that always asking about her. What should we do, call the police. We do not know where to look for her or should we?

Thanks, just trying to vent, I guess....
she may have split so she didnt have to go to the hearing, i dont know whether you should or shouldnt call her in as missing, i would be just sick and im sure you are. as far as missing her using...how and why should you know, dont beat yourself up about that, come on over to the family board, there are alot of family members there
Thank you momg