Backstory: My cousin and I are very close, grew up basically as sisters. I was my cousin's MOH in her wedding in Sept 2018. She told me when she "proposed" that I didn't have to make her mine.
Fast forward to my engagement in June 2019. She posts a collage of my engagement on Facebook with a picture of us from her wedding saying she is "so excited". Then I don't hear a word from her afterwards regarding the wedding, planning, events..nothing. Meanwhile my best friend (who is local to me, whereas my cousin is roughly 2 hours away), was involved and inquisitive from the jump.
Fast forward again to my BM proposals in August. I took my cousins words to heart, she is not my MOH. She doesn't protest much, acts happy. Then I go dress shopping later that week, I only bring my MOH and my mom. She sees my posts on FB about finding my dress, she texts me asking who I took to go dress shopping, doesn't ask about the dress or anything, unlike my other BMs who saw the post. I let her know who I brought, and she has the typical "I'm trying to not make it super obvious that I'm upset, but I'm still going to make it so you can tell" response. Long story short and some catty texts back and forth, she eventually tells me she's hurt that she isn't MOH. I let her know how I came to make the choice. She is NOT INVOLVED. Why would I want someone who is supposed to be the most help to me during this time to be the person who is the least involved out of all of them? She apologizes, and blames it on her future sister-in-law's wedding in September that is taking up her time, and after that is over she will be completely involved in mine.
Fast forward yet again to present day. She is STILL NOT INVOLVED. Not responsive to group messages. Not including herself in any decisions I'm having them make about their attire or anything. It's so frustrating.
How do I go about bringing this up to her with out sounding like a Bridezilla? Or am I completely in the wrong?