I (25F) am about to get married to my fiance (28M) and we already got the wedding list down, however my sister (25F, Irish twin) just rejected my invitation cause apparently she doesn't believe she can be at my wedding without her "trauma" being triggered.
Her husband died 6 years ago just 10 days after they got married and now my sister thinks attending another wedding would trigger all of these memories and it would be too much for her, even tho she knew her husband would die soon after their wedding cause he had late stage cancer.
That was only reason they even got married and it was 6 years ago, so by all means she shouldn't be so traumatized that she'd avoid any and all weddings, including mine. Honestly I feel like this trauma thing is just an excuse not to come cause we've always had a rocky relationship, but c'mon now, it's my wedding, she should put that aside and support me during my biggest day.