How to disinvite bridesmaid

TLDR; friendship has grown apart quite a bit since asking my friend to be a bridesmaid. We haven’t spoken in 4 months, and probably haven’t seen each other since July 2023.

I guess let me start with: I am prepared for this friendship to end, as we haven’t talked in 4 months anyway. Our friendship started in 2020, right before lock down happened. I got engaged back in Dec 2022 and she was one of the first people to know. I guess keeping it vague, this bridesmaid had a history of her SO cheating, which made her realize how much she isolated her self from her friends and when her relationship went sour, she had no one because she put everyone on the back burner for this guy. Her words, not mine. Fast forward a few months back and she’s found a new boyfriend. I’m glad he treats her well unlike her last partner. However, she’s followed the exact same pattern of putting our friendship on the back burner.
A few examples:
I asked her to help with our dogs for our engagement photos, she said yes, and then she asked if her new boyfriend could come to “help.” It was already stressful, but I said sure. This was the first time I was meeting him, which made it kind of awkward because it’s our engagement photo shoot and it’s kind of intimate to be doing in front of a stranger. Anyway, she tells him where and when, and he shows up 45 minutes late when we’re finished walking back to our cars. He said he had a project he “just couldn’t put down.” It turned out to be a flower box he was making, with no deadline. Now, I understand he has absolutely 0 commitment to me, my fiancée, or my wedding. However, because he decided to be late, that meant my bridesmaid was calling him constantly trying to help him find the parking lot (apparently she didn’t send the coordinates like I told her to do). So I was trying to get her attention the entire photo shoot and I feel like we missed some opportunities with our pups because she was distracted by where her bf was. We were on the beach and I literally had to shout down the beach so she could hear me because she was on the phone. Our photo shoot lasted probably around 50 minutes. After everything, it was quite obvious he just didn’t care about being 45 minutes late OR she didn’t actually tell him “hey, I told everyone you’d help out.” I felt very cornered and forced to meet him on such last notice and during such a special time.
Another example:i told her towards the end of December about two wedding expos I would like to attend with her. She agreed, and said she put BOTH in her calendar. The first one comes and we go together, but she’s just texting her boyfriend the entire time. At every single vendor, she had her phone messaging him. It made me feel guilty because I didn’t think she actually cared to be there. A few weeks go by, she messages me and asks what the dates are for the second expo, I tell her the dates and let her know (like the first one) I’ll be buying her ticket. I also mention “please don’t forget to put this in your calendar, I really want to go with you.” She says she put it in her calendar. A week before the expo, I send her one of those video ads for the expo and she says “when is this?” I tell her it’s the wedding expo that I’ve sent her the dates to twice. She tells me that her boyfriend is up and that she didn’t realize the day it was happening. This was frustrating for obvious reasons. She said she could “leave him (bf) behind for a few hours so she could go” and that “he can try to find something to do for a bit.” Which made me feel guilty, again, so I just said it wasn’t a big deal. Her roommate ended up telling me that they didn’t even end up doing anything that weekend, except she watched him play video games on the computer. This was a huge punch to the gut for me.
There’s many other instances of putting our friendship on the back burner until something bad happens, these are just two little examples.
Again, I totally understand that my wedding should absolutely not be her top priority. I also get that being a bridesmaid isn’t all the hype that people make it seem. There’s really no commitment besides showing up in the dress I choose on the wedding day. I think it’s more that our friendship didn’t even seem like a 10th priority when her boyfriend came into the photo. We haven’t talked in 4 months, and the last time we hung out was in summer. I think I’ve already made up my mind about disinviting her, my other bridesmaids also agree that it might be best to cut ties. I should note, all of my other bridesmaids (one 2 hours away, one in the mid west US, and one in FL) have went above and beyond to help with anything they can. I think it may be another gut punch because this bridesmaid lives 15 minutes away. What do I say? How do I say it? I’m not a confrontational person, so everything about this sucks!