Do i invite my aunt and uncle to my wedding? Cousins?

Hi there
Here is the situation... my father’s brothers wife hates my mother to the point where she won’t even be in the same room as her, won’t look at her. It makes any situation they are together extremely stressful. The way I feel is I am my mothers only daughter and this wedding is a big deal for her too. I don’t want someone at my wedding who doesn’t even acknowledge my mother. Now my mother is difficult, but she did apologize to my aunt a while ago in which my aunt was not receptive and didn’t move on. When I see my aunt and uncle I always say hi because the issue has nothing to do with me. As well as I really like their kids, my cousins, and I want to invite the kids... not sure what to do... who do I invite or not invite?