I have a friendship group from university: three women I am very close to, one I get on well with but don't interact with much outside the group, and the one I'm wondering about here. This woman and I used to be close, but I was struggling with the fact that she really lacked empathy and failed to support me in numerous respects, leaving me quite upset on a number of occasions. I never addressed this directly, but contact sort of tapered off on both parts about four-five years ago and I haven't reached out to her since. She is in our group chat and I see her occasionally at group meet-ups.
I am getting married next year and, Covid-permitting, would like to invite all these women except her to my wedding. However, I am worried that she will then refuse to attend group meet-ups with me, and force the others to 'choose' between up.
YABU: Invite her to keep the peace, she's just one person
YANBU: She's not a friend, don't invite her