I think that if the author's daughter is a smart girl (I have no doubt that she is), then he can count on her being able to earn money by gambling and being able to fulfill her dreams with this income.
Teenagers need money for things and accessories, and gambling is a way out of a poor situation for a teenager, but only with a conscious approach.
Gambling isnt a way out of poor situations for anyone most especially a teenager. They aren't the only with needs as a matter of fact they are not under much pressure like adults. If she's gambling it means that she is been provided for financially and there is absolutely no point in gambling to make money. It's dangerous for her to be exposed to gambling at such a young age, if she's not monitored properly she might addicted
The influence of gambling can penetrate with her young age so better not to let this kind of activities be her hobby best to find alternative ways to be entertain or if she's into other means of making money better to lead her to other options like online selling or something that will keep her busy though depends on how you and your daughter will handle things all got their own opinions about this but the decision remains to both of you.