Baby Shower

My baby shower is coming up and we decided to do a small shower with just family and a couple friends. I invited one of my best friends since elementary school however, she does not have a license or way of getting to my shower. My fiancé is already driving an hour and 30 to pick up family that cannot drive, and I feel like I should be at home helping my mom get everything ready. How do I politely tell her that it’s just not possible for me to get her and take her home? Am I being selfish by not getting her?