If you have doubt and some evidence about your daughter to take the heroin drugs than it is very serious matter. You must have to call his friends and ask about her activities. It is crucial task for you to keep watch on the movement and activities of your daughter like tracking of mobile phone messages and phone calls. Keep watch after the campus time and meet her friends and ask the question to know the presence of her in study and other activity. If case are more saviors than you can contact the detective agencies to get track on the movement of your daughter.
Yes, you must have to track your daughter activities to look at the day to day movement of your daughter. It is more important for you to see the status of your daughter. You need to get proper report and win the confidence of your daughter. It is more important for you to get understand the behavior of your daughter to get understand the activities of your daughter.