My family has had a several years long fued with my aunt. My aunt (for reasons I still fail to understand) made up lies and called the Department of CHild Protective services on my Dad. She did this twice. The first time was when I was about 11. We didn't talk to her for about a year but eventually forgave her and things were fine. When I was 19 she did it again. That was 6 years ago. Now I'm a forgiving person and I've let it go. But my parents still have nothing to do with her and my dad has told me in no uncertain terms that if I invite her to my wedding he won't come. She used to be my favorite aunt and once upon a time we were really close. Since the second false report I've had minimal contact with her and have only occassionally since her while visiting other family.She recently friended me on facebook. I accepted her because I didn't see any harm. Today I changed my status to "
On this day next year I'll be getting married! 
We finally found a venue." she commented "how great! I will mark my calendar". This puts me in a bit of an ackward place. I didn't think annoucing that I'd found a venue would lead people to assume they were invited. I mean how presumptious. My inclination is just to ignore the comment. But I still feel bad. I always figured that she would understand that I can't invite her. It makes me sad that by not inviting her I'm going to cause offense.