So here's the story.
I've only known my mom's side of our family (her 3 sisters), but the last time I saw them was years ago. When I asked my mom if she wanted me to invite them to the wedding, she said they wouldn't come and not to bother. I don't want to make my mom irritated by inviting them since they don't get along, and I wouldn't even know how to get a hold of them without asking her. Also, I don't know how comfortable I would feel inviting them because we haven't talked. My FI and I are paying for everything ourselves, and it just seems silly to invite people that I haven't talked to or seen, even if they are my family. Any suggestions as to what I should do?