>> they start ordering drinks. this girl hands me my i.d. as a fake i.d. >> reporter: it had been a rough couple weeks. >> my wallet was stolen. >> reporter: stolen during a night out. they took her cash, credit cards, and worst of all her driver's license. >> it was a pain in the butt. >> reporter: someone was using her identity, writing hundreds of dollars in bad checks. >> my i.d., you give me my i.d.? >> reporter: now that someone was sitting in her section. >> i didn't say anything. sure, i'll be right back with your margarita. went straight to the phone, called the cops. >> pretended nothing was wrong. >> i put on my server's smile but i was shaking like crazy. police spokesman steve davis cannot release the name of the woman arrested. >> dumb criminal. that's the first that comes to mind. >> reporter: he says the investigation is ongoing. >> we found some narcotics and stuff in this woman's possession,o she's in quite a bit of hot water. >> reporter: and get this -- she's 26, more than old enough to buy a drink with her own i.d.