Wedding Drama

Im getting married in may, and I invited my aunt. My mom and aunt are sisters and have a terrible relationship. They haven’t been on speaking terms in years and even tell their mom (my grandma) not to mention one another. My mom had previously told me not to invite my aunt because it would cause her stress.

The reasons I invited her anyways are: 1. She’s family 2. My brother says when he gets married he is going to invite her 3. I really want my cousins to come and I think if I did not invite their mom, they would also not attend out of solidarity. My mom wants me to uninvite my aunt because my aunt being there will cause her too much stress to even enjoy the day. To be fair Im not close with my aunt, haven’t seen her in person in years. But again, I already asked her to go and she seems very eager. Any advice?