Pawn shops who buy stolen property?

my daughter's daughter let her boyfriend in when her mother was at the hospital with her sick child having surgery, and the boyfriend robbed my daughter taking every piece of Jewry she had. a police report was made, and immediately the police knew what pawn shop it was. but when my daughter went to get her items, the rings had already been melted down, all the diamonds taken out, and the rings were gone. we live in ohio and i was wondering what responsibility does the pawn shop have.or do they just get by and come out unscathed. according to something i read they had to wait a certain amount of days before an item could be sold or gotten rid of just in case it was stolen and to give the victim a chance to get their things back. the rings were extremely valuable many heirlooms which can never be replaced. the thief was seen on camera selling the items and he also stole a gun. will the pawn shop be held responsible and will they be held accountable for giving the victim her money or do they get out of it and not have to take responsibility. it would seem to me that they got rid of the items rather quickly almost as if they knew the items were stolen.