Life can be so cruel at times, just when you gain some strength, something else comes to knock you down, I can understand how frustrating waiting can be, you feel like they should be doing something as time means everything, I know it is a very demanding time for you, it sounds like you are gaining strength from each other, i hope you can all hold out and that your mum gains the strength needed to fight, i am sure your love and help will see her through.
Good luck and strength, my thoughts and prayers are with you and your mum and family.
Take care.xx