Bridesmaid issues - asking someone to back out???

I’m basically just posting on here to vent because I feel super frustrated and upset. I have had a terrible time getting my bridesmaids to participate in things, and when I say things I mean like dress shopping for myself. Two of them either just didn’t answer me or straight up flaked when the day came to go. Now I have one who’s having dress issues, she can’t fit into any dresses and she’s mad. Now I bought her one so she wouldnt spend any more money and she’s not making any time to try it on. I understand that’s super upsetting because body image is an issue but I’m really trying to help. But she’s also been complaining about not wanting to take off work the day before the wedding or get a place to stay even though she knew it was a destination wedding from the start and I gave her more than enough chances to back out or say no. Now we’re trying to plan a Bach trip which everyone supposedly was on board with but no one is answering the texts about it except one of them. Is there an appropriate time/way to kindly ask a bridesmaid to back out? How am I supposed to handle this???


ughhhh anyway sorry for the rant if anyone even bothers to read this just needed to get that out!!