Call the parents and discuss the situation with them.

And there's a third option, which is that bad debts can be taken off your taxes. You don't recover the full amount but it's better than nothing.

The problem with small claims court is that once you get a judgement you have to collect the money from the person who owes you. When I had one I ended up selling the judgement to a collection agency and I got back about forty percent of what I was owed. By the time I was done, counting my time it would have been better to take the tax break.

Usually, getting the crapsack out of your life is worth whatever it will cost you.