I suspect my 20 year old daughter of being a heroin addict. All the symptoms fit (mood swings, loss of job, stealing from family and friends, dilated (small) pupils, insomnia, and constant lying) I have not seen track marks, but it seems that she is going out of the way to hide her arms. I also know they can shoot up between their toes. I am at a loss, I feel confused and helpless. I want to help, but I do not believe she is ready to accept or admit there is a problem. My wife and I are in fear that she is going to steal more and more from us to support the habit. At her age we cannot force her into rehab, and kicking to the street will only make it worse. Any advice would be greatly appreciated.