Friends shoplifting problem. Advice?

Once i went with a friend to the mall it turns out she had stolen some stuff and i was an charge as an accomplice. I really thought that she had learn her lesson. My parents warn me that she probably didn't. Well today we were going shopping for school clothes for her and hang out a bit. We had two other friends which i haven't seen for a while. Well they all shoplifted, from 4 stores how they got away i have no idea. But i was outside since i knew what were the consequences were and i sure as hell learn my lesson. I wanted to go home but couldn't she was my only ride. What surprise me was they didn't get caught i saw many polices running through the store of target. I'm pretty sure they might know they did shoplifted but my friends think they got away with it or they must think they are some kind of pro's at it. I know i should of done something. I had no idea that this was going to happen. My friend told me "that the guy told us that it wasn't in our record so its not a big deal" That made realize, she hasn't learn anything. When we got caught she was crying moping and stuff i didn't i knew she was stealing that day. I learn my lesson. But i guess she didn't. Any advice?