Kicking bridesmaid out

My wedding was booked very quickly and sporadically (only 6 months to plan). I planned a bridesmaids brunch so that I could give my 3 bridesmaids and maid of honor their proposal boxes and directly after we planned to go bridesmaids dress shopping together. As soon as everyone opened their boxes and (we’ll call her stacy) realized she wasn’t the maid of honor she started acting strange and then rushed outside to make a phone call. When she came back in she made a ridiculous excuse that she needed to leave. So I said Stacy this is really the only time we can go dress shopping the store told me the dresses won’t come in time if we went any later. (I let them choose their own dresses so she really needed to be present). She sat miserably at the table making the entire vibe horrible so i asked for the check which my fiancé had surprised us and paid for the brunch. Stacy said I’m sorry I have to go which really upset me because her reason for leaving was so ridiculous that everyone at the table was looking at her like she was crazy. A few weeks later she called me and told me the reason she left was because she was so upset that she wasn’t chosen as my maid of honor and I explained to her that I’ve been friends with my maid of honor much longer than her and that was the reason why I chose her and apologized that she felt that way and that it didn’t mean that she meant any less to me. Fast forward to 3 months before the wedding we were on the phone and she found a dress online and said she would order it in 2 weeks when she got paid while simultaneously telling me to hold on so she could meet her weed dealer. (Probably spending that dress money lol) Nothing was ever said after that and dress wasn’t ordered now we’re almost 2 months before the wedding and my MOH is trying to plan a bachelorette brunch for me and made a group chat which stacy never said a word in. 2 weeks later MOH tries again to find out when stacy is available to come and still no answer. MOH asks me to please text Stacy because she won’t answer so I do and she tells me that she most likely can’t take off of work (2 months in advance). I’m also not having a bridal shower so it’s only one brunch she would’ve needed to be there for. I feel like she’s done nothing to support or be there for me in any way during this entire process, hasn’t asked how the planning is going, hasn’t asked if I need help with anything, yet I’m paying for her hair, makeup, bouquet, a gift and a card which I don’t even know what I would thank her for because she’s done nothing. she could care less about being there for me the one time in my life that any of this stuff will ever happen. Are these decent reasons to tell her that it seems like being in my bridal party is too much for her and I think it’s best if she isn’t in it?