You can not undertake all these steps and you can only approach the District Legal Services Authority or some Women Voluntary Organisation or Department of child and women welfare for a remedy. Get a proper petition prepared with all facts chronologically and submit it to District Collector and Supdt of Police and personally hand over the petitions to any Women voluntary organization. There may be many social workers or advocates that can help you to find a way.
It means FIR was not registered and your father was detained in police station.