His ex at my baby shower???

So I'm up thinking about all the things we have to plan before our little one gets here. And it just popped in my head the people we are going to invite to our baby shower. He grew up being semi close with this family, and I LOVE all of them. EXCEPT for the one girl he ended up dating out of that family. Listen I tried to not be that girl and I TRIED to like her. But we invited her and some friends over one time, she came over fucked up on drugs and started grabbing all up on him. I just let it go because she wasnt herself. But then she came over again one day and all of our friends were staying the night. She went into OUR BEDROOM while we were sleeping and got NAKED. left her bra and underwear on our floor, put HIS CLOTHES ON. Then had the damn nerve to say, "oh I just forgot pajamas and needed something to sleep in" like bitchhhhhhh whattttttt. I love her mom and her little sister. But that bitch had to GO. I'm obviously going to invite her little sister and her mother but I just cant stomach the thought of her being there. Shes tried to start fights w me, disrespected my relationship, and is just a terrible person all around. I dont want the biggest blessing of my life and a big day for us to be ruined or for me to feel on edge because shes there. I'd just feel better if she wasnt. Is that rude to invite her family but not her?? I just cant STAND HER