i need advice about a fam member

So my very opinionated grandmother (whom I've been close to my whole life) has told my mother that she won't be attending my wedding because I won't be wearing a white dress. Now when I talk to her,everything is fine. She has never said anything about it. I'm not going to lie, it hurts. I will not change my mind about how I do my own wedding to pleas anyone else tho. So she's out of luck there lol The real question is..... Do I invite her and act like I know nothing? Or do I not invite her. These things have happened before. (My daughter name she didn't like and told people I wasn't naming baby the name I had chosen blah blah blah) im very exhausted from it. Advice much appreciated. You guys are my only ear right now