Bridesmaid dresses

We are about a month out! So in the beginning when I picked my bridesmaids, I gave them a swatch and told them to please just make sure it matches the color and that the dress is floor length. After that no ones scheduled really matched up, so all the girls went and got their own dresses. Then a few months later everyone was able to come together with their dresses, and none of the bridesmaids liked how it came together. So we all went to David's Bridal one afternoon and they all chose one dress that they all liked and exchanged their old dresses. I was fine with this, as long as they all were comfortable and happy. So fast forward to two weeks ago, I reminded them that they should start alterations soon. Come to find out one of my bridesmaids never exchanged her dress because she feels more comfortable in her original dress and she didnt think it was fair (I have 6 maids total including her, so it was 5 votes against hers, but she never said anything and went along with the groups decision). Now that everyone has the same dress and hers is different, it will appear as if she is my MOH. The dress ships ever quickly (within a week). I asked her what she planned on doing and she said I guess I'll have to exchange my dress but if the new one doesn't come in time, I will use my original dress. I offered to cover the cost of the new dress until her refund was processed then she could pay me back and she said not to worry about it and she would get it done and didnt need my help financially. This morning, I woke up to a text saying how unfair the group is and she will not have time to go to the store to exchange her dress any time soon. I haven't responded yet because I dont want to come off wrong or hurtful. I checked DB website and the shipping is still about a week, so her dress will come in time. Should I just cut her out (this is what my sister thinks I should do) or should I offer to cover the cost again? Help 😩!