Bridesmaid drama

At my bachelorette party, one of my bridesmaid was apparently upset about how we were getting back and forth to a local bar. She did not come to anyone about this but rather pouted in her room until I can in and offered to DD at my own bachelorette party just to keep the peace and help her realize it’s not a big deal who DD’s, I just want to have fun. (I totally would DD for her at hers no questions asked). Anyway her response was no because sitting in the back will make her car sick and we can’t take an Uber because they only sit 3. She starting telling me that she was upset that she felt like the driving plans were placed on her and she’s agitated about it. I said “I feel like no matter what I do someone is upset” and I needed a breather so I walked away from her. 30 seconds later she had her suitcase packed and was going to leave. My MOH talked to her for like half hour but she refused to talk to me because she didn’t like how I handled the situation. She ended up leaving and I reached out to her two days later, no response. I just messaged again two days later and she said she came home to a lot with her horse and that she’d call me before the weekend sometime.
I feel bothered that me walking away is causing so much, I maybe shouldn’t have but that’s my way of trying to distance myself because when she spits fire at me I honestly can’t think. And I didn’t understand why she thought anyone was driving drunk or asked her to. If we couldn’t have made it there and back safely we simply wouldn’t have went. What she didn’t know is we had a friends dad taking and picking us up, MOH did apologize for not making this clear but we were honestly just having fun and it was handled so we didn’t stress. She didn’t calmly ask anyone or this would have been completely different. I think she also didn’t want to spend the money to go out which I am totally fine with, she and her friend that was there could have hung out, started a fire, etc. we were back in two hours. I was very upset and I tried my best to enjoy the girls who stayed but I felt beat up the whole next day. I look dead in the pictures from the next day. This person has dramatic ends to every friendship and professional relationship that she has so part of me feels like she wants this? I am highly considering explaining that just I can’t handle the drama especially on my wedding day and I just think she will disturb the peace is some capacity. I know this could be relationship ending but I’m also accepting it. Lodging for the wedding was booked on the last possible day available, the wedding is a month away and she hasn’t had her dress hemmed or even tried it on (we bought them in December), she scheduled a horse show AFTER we told her my shower date, none of these things bothered me on their own but then starting drama at the bachelorette party feels like the final straw for me. Half the time we go out to eat we only discuss her and her issues, and I listen which I’m fine with but now that tables and turned and it isn’t about her she seems to be lashing out in my opinion. She told us over the weekend she was rolling around on the floor crying to her boyfriend that she wanted to be engaged. Even prior to my engagement we would bump heads and to be clear a week after my engagement she texted me “I better be a bridesmaid” so I didn’t even have a chance to think about who I would choose because how would I have not had her obviously that would have pissed her off. She’s been a good friend over the 3 years I’ve known her, helped me with some difficult things but I’m just wondering if those are just good memories and it’s not that way anymore.