OMG that's horrible! Not just horrible - but dangerous. Glad you caught her. That could be one of the top 10 rudest things I have heard. Did you do anything to provoke her or was she just intoxicated?
My wife and I were in New Orleans during New Year's a few years back and I caught a hand going into her purse trying to grab her wallet. There were so many people - I couldnt even see what body the hand was coming from - but I gave that hand a good wack and it quickly retreated!