Bridesmaid can’t make shower

My shower is this weekend and one of my bridesmaids who was supposed to come told he she probably won’t be able to make it a few days ago. She lives 6-7 hours drive from where the shower is located and doesn’t want to drive the whole way by herself and pay for all the gas. One of my friends also coming to the shower lives about halfway between the 2 locations and is willing/able to give her a ride for the 2nd half of the trip to help break it up. I offered for her to stay at my house etc no problem but she still says she can’t. We invited like 50 people to the shower and only about 28 are coming. My fiancé’s family (7 ladies) may cancel too because of a recent death in the family (and I certainly understand that). So the event is kind of falling apart 😢 and my mom has put in a tremendous amount of work to make this shower super special.
For some reason though her canceling hurts more than the rest. Can/should I offer to help pay for her gas or really try to encourage her to come? Or is that being self-absorbed and I should just accept her no and leave it at that?