This is a good response, this whole situation can be turned around and what do I mean by that? As a teenager her interests can be channelled into doing something productive... Gambling takes a lot of patience and some calculations are also made, this means that her interests can be turned into a productive thing...like you said, as the father it's important for him to be around this to solve that problem
It is not so easy to get answers when it comes to teenagers , teenagers in general are almost misunderstood, because not even they know well what it is that they want, I would say that a father with his children has to have a lot of communication, that the children see them as their best Friends and thus have more control over them, I will always say that the best path for a teenager is Sports, if he dedicates himself to a sport he will be away from many things.