Our wedding got postponed due to COVID-19 and we want to elope but I can't stand my brother's girlfriend. She moved in with us due to everything going on right now and has been an awful houseguest. He's been dating her for a little over a year and if we elope it would just be our parents and my brother. My fiancé thinks I will cause problems for not inviting her but if it's a family-only affair and not even our closest friends are coming could she really get that upset?
I don't want her involved in such an intimate affair even if it's as a spectator especially since they haven't dated that long and my brother (he's 32) isn't sure if she's "the one". Any advice? I'm a being completely unreasonable?