Hope, your daughter could very well be a functional heroin addict. In my very long story, I mentioned how happy my daughter seemed over the past few months, each time I talked to her on the phone. In fact, many of my family members who talked to her got the same impression. The day my dad and I picked her up, she did not look like a drug user, she looked quite normal. But, her lifestyle proved otherwise, yet we were too far away to know what was really going on, we just went by what we "heard."
I read somewhere, on this site I believe, "I can hear you better with my eyes." No matter what my daughter tells me, it's what I "see" that is the truth. It's so sad when we don't listen with our eyes.