I don't know if you remember a few months ago I posted a situation with a cousin and asking for your snarkiest best fantasy response. This is the girl who informed me that she hates Philadelphia and then told me she needed to be entertained by somebody (hint hint, me) between the time her flight landed and when she left for the wedding. Even with my small wedding, there was no way not to invite her.
I know how I handled the following situation, but if you care to unleash another snark that is dying to get out, read on:
Immediately after our garden ceremony we had my brothers lead people into the house for food and drinks while we did photos. Cousin dearest was taking pics and decided to unleash on my husband of about 4 minutes at that point that he was an ass and if he hadn't been such an ass we would have been married seven years ago. I found out later that she continued this when I wasn't around just to be shut down by my brothers and father.
We had broken up at one point because of immaturity (nothing bad, just didn't know what we had) on both of our parts and we worked long and hard to get to where we are now. This is either beyond her comprehension or she thinks that she's in a position to judge. After all, she got married because she was sick of her mother harping on her for "living in sin", later divorced the guy (who had beat the living crap out of her) and later still got knocked up on a one night stand with a guy who is now in jail.
One more thing, because we hired a van to drive our guests, there was no way to tell her to leave. Care to take a swing?

AKA GoodLuckBear14