My step-daughter has run away. She moved in with a 20 year old boyfriend, and has not contacted her mother or me. The boys grandmother came by our house while we were at work, and talked to my mother. My mother called my wife and put the grandmother on with my wife. She said that our daughter is OK, and is welcome to stay at her grandsons. Our daughter left her high school and is going to a GED course 3 hours per day. We think she is using drugs. What are our legal responsibilities to her, and what recourse do we have. Her mother is heart broken and I don't know how to control our 17 year old.