Well, they have 2 options. Either stay in jail for 7 years or pay just 320$.
Well, I can't relate that much on this one because I myself isn't blaming anybody if I'm losing in gambling. I mean it's my own decisions to enter gambling so I will be the one who's to blame if I will lose my money. I guess the only scenario that we will blame gambling for our losses is that if some friend of yours tried to tell you to bet on a particular team, you bet on it and you lose. Maybe that's the time where you can blame your friend.

How can two persons be so addicted to gambling that they'll go to such an extent? Apparently the mother is definitely not a good role model to the son. The son definitely needs a strong father figure which is what he lacks. I don't like the punishment or fine give to them. It is not going to be in anyway effective. Their punishment could have been rehabilitation and community service.
It's gambling, and gambling isn't picky.

Nobody is safe from gambling addiction. Mother, father, son, daughter, cousins. All people can get addicted into gambling. As long as they tried it, and it come to a point where they want to spend more time with it then it's gambling addiction already. I guess the mother needs money, and she doesn't have any ways to earn money so she resorted to gambling. Either way, I agree with you that she didn't become a good model for his son, and it's quite unfortunate for the kid to be involved into gambling as such a young age.