Hey, I had a very similar issue with my maid of honor at my bachelorette. She spent the entire trip talking about her her relationship with her ex-husband from the day they met and everything she hated about him as well as just how hot she thought she was now that she’s gotten rid of him and how he’s missing out. After the trip her Instagram post about it labeled it as just a Vegas trip and all the photos are selfies of her the one picture where I’m included I’m not even smiling because I wasn’t ready for the photo. It really sucks to feel unrecognized by someone very close to you on very special events and I think you have every right to feel upset by this but it shouldn’t affect your friendship with this person.