How do I prevent my girlfriend from coming to a party with me?

Ok before i get a bunch of hate comments, hear me out. I had an argument with her and she was being a total b. not admitting shes wrong, blaming me, etc. And theres this party soon and she really wants to come. I know the ppl who are hosting it, and they said theyll do their best to deter her, but they wont tell her straight that she cant come. but anyways, i just want to have a good time without her ruining my fun, and i know she would. any ideas in general on how to deter someone from coming to a party without being too direct?