Moh- Keep, Demote, Remove Altogether? Help!

~Kind of a long post, sorry in advance~
I have had two maid of honors since I got engaged almost two years ago. One is a girl I considered to be my best friend that I met while living in Europe. She even threw us our engagement party and was a shoe in for the role. We both moved back to the US over a year ago and I asked if she still wanted to be my MOH. She said absolutely. Time's passed, and she's not texted, called, messaged our group.. nothing but a few words here and there. My other MOH asked if we could do a three-way call to discuss possible bachelorette things and, (we’ll call her “S”), was immediately so rude to me. “S” bombarded me with things like “I don’t even know if I’m coming! I might start a new job and don’t know if I’ll have the days off! This is money I don’t want to be spending right now! Your wedding is putting a strain on my marriage and you’re unsympathetic!” I just told her to do what she needs to do and we haven’t spoken since then. She’s known the date for over a year which I think is enough time to save up roughly $200-300 that would be needed. Flights from where she lives to where the wedding is, run for about $120. I gave all the girls free reign of their dresses as long as they’re long, black, and classy, so she could find a dress for like, $30 on Amazon. And hair and makeup is $140 because they’re coming to us and it’s a bundle type of thing. Other than that, I haven’t asked her for anything. I haven’t bothered her about wedding stuff except a few pictures of her bouquet and things like that. I’m torn because she hasn’t confirmed she’s not coming but with how she acted and how rude she was, do I demote her to a bridesmaid or remove her altogether? I’m so torn and afraid to be “bridezilla" but that kind of behavior was just appalling. Any help or advice or even similar stories would be much appreciated!