I would have been really annoyed as well however swearing at the woman was uncalled for and wasn't real classy, she shouldn't have done it but swearing at her served no purpose. She did offer a form of apology when she was running to her car when she saw you.

You could still have told her she was out of line parking like that without swearing. Sadly in today's world you do run the risk of either getting belted or your car damaged. It shouldn't be like that but it is.