Teens normally dont like parents setting rules and boundries and consider this "not getting enough space" but if you feel she is in danger then you can contact the child abuse agency in your area and they will investigate to find out if she truely is safe where she is or not. if not you may be asked to become her guardian until she reaches 16 or 18 depending on the state. nation wide a teen 16 or older can decide where they want to live (which is why so many runaways cannot be forced to return home if they are 16 or older) basically that all you really can do unless you choose to sit down with her gaurdians that she is now living with and have a "family meeting" where she can work things out with her guardians or they allow someone else to take over her care.