Legal Question in Criminal Law in Florida

Possibly. Although most crimes require you to fully know what you were doing, the state might say that you should've known what you were doing was wrong because you should've known that her actions were sketchy.

The fact that the transaction wasn’t completed makes no difference. “Can” you be charged with fraudulent use of a credit card, possession of a stolen credit card, and petit theft...yes. “Will” you be charged is another issue. There’s a few facts missing, such as were the police called, did Walmart take the cards, do they know who you are, were you on video? Why does someone need two credit cards to buy cigarettes? Hire a lawyer.