My fiance's sister is out of control. She's not only having her wedding exactly one month before ours, but she's having it at the location my fiance and I had wanted but was waaay over our budget. My fiance and I are paying for our own wedding so our budget is rather tight were as his sister's is being funded by his parents and the sky is her only limit.
Now she is also trying to make us look bad with my future in laws by claiming we are being horribly unreasonable by requesting she not use that particular location and possibly considering ending the war with her grandmother so as not to make the holidays insane. We don't want to have drama at the wedding and we told her that if she can't make up with the grandmother she can't attend our wedding.