Bridesmaid Drama - Replacement Bridesmaid -personal Attendant

So it's a month out before the wedding and I've officially lost my mind. Also having intense amounts of drama and crazy life events happening all over. My mom and one of my best friends have recently had significant health problems that have involved blood clots. My mom has just been released in his able to fly to my wedding. My friend is no longer able to travel. She was one of my maids of honor. Another 1 of my bridesmaids is not responding to any communication at all and I'm fairly positive is not going to go to the wedding because she can't afford it but she won't talk to me. Which is a whole different problem. Since I can't actually talk to her I have to at this point assume she is most likely not going. I know she does not have a flight yet, which I imagine is why she is avoiding talking to me.



So I have two bridesmaids left, one of which is my other maid of honor. Both of them are on the other side of the country and both of them are amazing.
I am having massive amounts of anxiety about only having 2 bridesmaids. Part of me knows this is very stupid, and the reality is I also have to male friends who are in the wedding party. At the same time it is starting to really bother me that I will only have 2 girls getting ready with me, since I was mentally prepared for 4 up until 3 days ago. Technically the one girl could still go but at some point in the very near future I'm going to have to cancel things like her HMU, bouquet, nails, change head count for caterer, etc.
Let me just say that I think asking somebody to be a backup bridesmaid is kind of a d*** move. However, my MOH and childhood closest friend are nearly the same size, and she has been insanely helpful - she even helped my mom host my bridal shower at her own house. I have been feeling incredibly guilty that I didn't make her a bridesmaid since last April, but I picked my bridesmaids in January and couldn't afford more than 4 due to the things we are covering for them (including housing in our large rental house which space was limited).
None of that is anything, however I have then freaking out and one of my sort of a rational ideas has been to ask her if she would step in period I do not actually think she would be offended. We have known each other most of our entire lives and I've do feel like I could talk to her honestly and she would be happy to help. At the same time she is now asking me if I have a personal attendant. I have a day of coordinator. I really looked up the personal attendant thing to see what it is and continue to be kind of appalled at it being a bridesmaid that's not a bridesmaid. However this makes me feel like maybe I could ask her to step in as a bridesmaid and she would be just fine with it. On the other hand I have other friends who have also heard what has happened with wonder to of my bridesmaids and are offering significant help to us during our rehearsal dinner, wedding, and/or day after brunch. So on an equally anxious and awkward foot I feel that it is not fair for me to ask her and do nothing for the others.
This is probably all stupid but nevertheless I am freaking out.