doesn't matter how it ends up in arbitration. is she collectible? if not, doesn't matter if the arbitrators give you your $5000 ... on paper, that doesn't do you any good ... plus you've paid your attorney out of pocket.
your attorney should know if her attorney is one who just goes through the motions or is going to drag you through the mud ... running up your bill. did she pay for an attorney or get a free attorney? do you have a landlord tenant judgment or civil suit judgment?