I'm glad that you finally have an answer now. I will try the airports is a fantastic idea anything that can keep you off of your feet will help.
I have lymphedema (recently diagnosed and just started wrapping, 4th session next week) so I completely understand how hard it is to get a brace. Especially what the time constraint right now..
I'm so excited for her, she works so hard for her dream and succeeded. I'm so proud of her! 
Please keep us updated on the cortisone shot.