Oh my goodness.
I feel so sad about this right now and i'm so sorry Jer <3
You know that i've had my fair share of disappointments over the last few months so I can completely relate to how this is affecting you right now. I felt the same way when my MOH was putting her very short lived relationship before everything to do with my wedding. I know that there's obviously a healthy balance, but this is something that she would have committed to before they even started dating so i'd be extremely frustrated if this happened to me as well.
I also had a situation where someone backed out of a room with one of my bridesmaids and the other roommate decided to come for 5 days instead of 7 (It was a room of three girls). I ended up taking on the burden and paying the $400 difference myself so that my friend wouldn't be affected by it, but I was REALLY angry doing it lol. I made it known to the person who backed out. I only did this because the friend that it affected is my best friend of almost 20 years and she's flying in from New Zealand to make it, but if it were anyone else I wouldn't have been as forgiving over this situation.
You know i'm here for you for anything you want to chat/rant about. You've always been here to support me through everything.