As early as possible consult a psychiatrist for medicinal help and good advice and also Consult a psychologist for counselling sessions and psychotherapy. As ur daughter's behaviour is affected she needs Cognitive Behaviour Therapy or Behaviour Therapy Give her full Family support. Strictly follow her mobile,laptop, all social media account s.Take care and follow her friend circle. Dont do debate with ger or argue with her. Give her love and show that anything could happen but her family is always beside her.