My best friend's partner is a very heavy drinker who I suspect is often over the limit when he drives their two small children to school. I have had a number of difficult conversations with my friend about this but she always dismisses it as me being ridiculous or exaggerating because I don't like him. If I called the police and he lost his licence then it would be disastrous for the family as my friend doesn't drive and they live in a fairly remote area. But obviously if there was an accident it would be a hundred times worse. Any advice on what to do would be very welcome.