Am I wrong for being pissed off.

So I finally graduated from high school and a year early on top of it. So of course I invited a ton of people to my graduation including my grandma and aunt. My grandma hates my aunt (her sons ex wife but she’s still my aunt that won’t every change) when I finally decided to tell her she was coming. She tried to guilt trip me and said “I can’t believe you’re making me choose between suffering at your graduation or just not going. I told her she could do what she wanted but that I would be really hurt if she didn’t come especially since she went to my cousins and my aunt and grandma where both there. She then said that I was selfish for inviting her when I knew she had a problem with her. She finally decided that she was going to come but she wasn’t going to sit near her and she was going to go out to lunch alone without the rest of the family. I don’t mind as long as she’s there but am I wrong for being mad about the way she handled the situation?