A 19 year old girl ran away from home in Kerala to Bangalore. She was brought back by police. She is an adopted girl and very demanding from her parents. Also much spoilt. She says she is having an affair with a 19 year old boy in Bangalore. The girl's father sent her back to Bangalore to complete her BA final degree. She keeps bad company and still is in the same company. The girl keeps telling the father that she is an adult and can sue him once she files a complaint with the police. What precautions must the father take?