So here's a bit of a setup.
My family isn't really that large. About five years ago, my grandfather was on his death bed and my cousin stole money from him. She ended up in jail for a few years and got out about five months ago. I have no respect for her. She accused me of doing drugs in front of my family one Christmas, with no reason (I really never have done any drugs at all!). She's never sent a Christmas gift/card. She is a true disgrace to the family. When she got out of jail, she moved from VA to Massachusetts to live with her in-prison boyfriend's mother (I don't understand, nor do I care).
I had absolutely no intention of inviting her. The reason I was going to use if asked was because we're having a small wedding (65 people, and about 30 are his family) and she's estranged from me. Well, her mother (my dad's sister) asked my dad if my cousin would be invited and he said yes. Mind you, for anyone who didn't read a post I had several weeks ago, my parents aren't paying for this wedding, I am. Its not a money issue, we can afford the one person, but I really don't want her there. However, I'm not sure that not inviting her is an option anymore without causing serious family issues. Both her and her mother are very very dramatic. Any advice on how to handle this?