My dearest OP
I am so sorry about this. In might not take many posts before this thread gets ugly, with various nincompoops extolling the virtues of this rude patron for getting you to "mom up". Before this thread gets to that very nasty and WRONG place, I want to tell you...
* The lady was a moron.
* The lady was rude.
* You exercised a great deal of control to not sock her in the kisser.
You have nothing to be ashamed of or sorry for.
Next time, tell her to talk directly to the management and to take three full steps away from your table before you go apeshit on her ass. (Perhaps you can say it more politely, but, you know, I'm all fired up and in your corner!
)