At this point, you should consult with an experienced criminal law attorney in your area. After going all of the details of your son's situaton they can best advise further. And the sooner the better. The fact that so many trips to the pawn shop were made looks suspicious. Also, if she stole the jewelry, your son will need to prove that he did not know this if she will not corroberate his story. In fact, it's conceivble that if the items were stolen, she could accuse him of the thefts. Again, seek legal counsel ASAP.